diff --git a/main.py b/main.py
index 38ac496..e751948 100644
--- a/main.py
+++ b/main.py
@@ -60,18 +60,12 @@ def read_parameter(toml_file_path):
         para.max_i = toml_optional["max_i"]
 
 
-def egm():
-    if len(sys.argv) < 2:
-        toml_file_path = r"D:/code/EGM/历史/平乾750kV.toml"
-    else:
-        toml_file_path = sys.argv[1]
-    if not os.path.exists(toml_file_path):
-        logger.info(f"无法找到数据文件{toml_file_path}，程序退出。")
-        sys.exit(0)
-    logger.info(f"读取文件{toml_file_path}")
-    read_parameter(toml_file_path)
-    #########################################################
-    # 以上是需要设置的参数
+def run_egm() -> dict:
+    """
+    执行 EGM 计算的核心函数，可被外部调用。
+    假设参数已通过 para 全局对象设置好。
+    返回计算结果字典。
+    """
     parameter_display(para)
     h_whole = para.h_arm[0]  # 挂点高
     string_g_len = para.string_g_len
@@ -356,6 +350,37 @@ def egm():
             f"不同相跳闸率是{np.array2string(np.mean(n_sf_phases,axis=1),precision=16)}次/(100km·a)"
         )
 
+    return {
+        "success": True,
+        "message": "计算完成",
+        "data": {
+            "tripping_rate": f"{avr_n_sf:.16f} 次/(100km·a)",
+            "avr_n_sf": avr_n_sf,
+            "n_sf_phases": np.mean(n_sf_phases, axis=1).tolist(),
+            "parameters": {
+                "rated_voltage": para.rated_voltage,
+                "td": para.td,
+                "altitude": para.altitude,
+                "ground_angels": [a / math.pi * 180 for a in para.ground_angels],
+                "max_i": para.max_i
+            }
+        }
+    }
+
+
+def egm():
+    """命令行入口函数"""
+    if len(sys.argv) < 2:
+        toml_file_path = r"D:/code/EGM/历史/平乾750kV.toml"
+    else:
+        toml_file_path = sys.argv[1]
+    if not os.path.exists(toml_file_path):
+        logger.info(f"无法找到数据文件{toml_file_path}，程序退出。")
+        sys.exit(0)
+    logger.info(f"读取文件{toml_file_path}")
+    read_parameter(toml_file_path)
+    run_egm()
+
 
 def speed():
     a = 0
diff --git a/webui/src/components/ParameterForm.vue b/webui/src/components/ParameterForm.vue
index d145388..ee97bcf 100644
--- a/webui/src/components/ParameterForm.vue
+++ b/webui/src/components/ParameterForm.vue
@@ -317,7 +317,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, reactive, computed } from 'vue'
+import { ref, reactive, computed, onMounted, onUnmounted } from 'vue'
 import type { AllParameters } from '@/types'
 import LogComponent from './Log.vue'
 
@@ -411,17 +411,10 @@ const calculate = async () => {
   try {
     // 调用 pywebview 的 Python 函数
     if (window.pywebview) {
-      const response = await window.pywebview.api.calculate(params)
-
-      // 显示后端日志
-      const logs = response.logs
-      if (Array.isArray(logs) && logs.length > 0) {
-        for (const log of logs) {
-          logRef.value?.addLog(log.level as any, log.message)
-        }
-      }
-
-      result.value = JSON.stringify(response, null, 2)
+      // 后台线程启动计算，实时日志通过 addLogFromBackend 推送
+      // 结果通过 receiveResult 回调接收
+      await window.pywebview.api.calculate(params)
+      // 不在这里设置 calculating = false，等待 receiveResult 回调
     } else {
       // 开发模式下的模拟
       await new Promise(resolve => setTimeout(resolve, 1000))
@@ -436,11 +429,11 @@ const calculate = async () => {
           parameters: params
         }
       }, null, 2)
+      calculating.value = false
     }
   } catch (e: any) {
     error.value = e.message || '计算失败'
     logRef.value?.addLog('error', e.message || '计算失败')
-  } finally {
     calculating.value = false
   }
 }
@@ -514,8 +507,33 @@ declare global {
         export_config: (params: AllParameters) => Promise<any>
       }
     }
+    addLogFromBackend?: (log: { level: string; time: string; message: string }) => void
+    receiveResult?: (result: { success: boolean; message: string; data?: any; error?: string }) => void
   }
 }
+
+// 注册全局日志接收函数，供后端实时调用
+onMounted(() => {
+  // 实时日志推送
+  window.addLogFromBackend = (log: { level: string; time: string; message: string }) => {
+    logRef.value?.addLog(log.level as any, log.message)
+  }
+
+  // 接收计算结果
+  window.receiveResult = (res: { success: boolean; message: string; data?: any; error?: string }) => {
+    calculating.value = false
+    if (res.success) {
+      result.value = JSON.stringify(res, null, 2)
+    } else {
+      error.value = res.error || res.message
+    }
+  }
+})
+
+onUnmounted(() => {
+  window.addLogFromBackend = undefined
+  window.receiveResult = undefined
+})
 </script>
 
 <style scoped>
diff --git a/webview_app.py b/webview_app.py
index cfc092c..90eb6f2 100644
--- a/webview_app.py
+++ b/webview_app.py
@@ -7,6 +7,7 @@ import os
 import sys
 import json
 import math
+import threading
 from pathlib import Path
 from typing import Dict, Any, List
 from datetime import datetime
@@ -17,14 +18,8 @@ from loguru import logger
 project_root = Path(__file__).parent
 sys.path.insert(0, str(project_root))
 
-from core import (
-    Parameter, para,
-    func_ng, min_i, rs_fun, rc_fun, rg_fun,
-    bd_area, thunder_density, arc_possibility,
-    rg_line_function_factory, solve_circle_intersection,
-    solve_circle_line_intersection, Draw
-)
-import numpy as np
+from core import para
+from main import parameter_display, run_egm
 
 
 class WebHandler:
@@ -45,6 +40,35 @@ class WebHandler:
                 self.callback(log_entry)
 
 
+class LoguruWebHandler:
+    """Loguru 日志处理器，将 loguru 日志转发到 Web 界面"""
+
+    def __init__(self, app: 'EGMWebApp'):
+        self.app = app
+
+    def write(self, message):
+        """loguru handler 的写入方法"""
+        record = message.record
+        level = record['level'].name.lower()
+
+        # 映射 loguru 级别到前端级别
+        level_map = {
+            'trace': 'debug',
+            'debug': 'debug',
+            'info': 'info',
+            'success': 'info',
+            'warning': 'warning',
+            'error': 'error',
+            'critical': 'error'
+        }
+        frontend_level = level_map.get(level, 'info')
+
+        # 提取消息文本
+        msg = record['message']
+        if msg.strip():
+            self.app.add_log(frontend_level, msg)
+
+
 class EGMWebApp:
     """EGM 计算程序的 Web 界面后端"""
 
@@ -52,9 +76,10 @@ class EGMWebApp:
         self.window = None
         self.web_handler = None
         self.logs: List[Dict[str, str]] = []
+        self._loguru_handler_id = None
 
     def add_log(self, level: str, message: str):
-        """添加日志"""
+        """添加日志并实时推送到前端"""
         log_entry = {
             "level": level,
             "time": datetime.now().strftime("%H:%M:%S"),
@@ -62,23 +87,59 @@ class EGMWebApp:
         }
         self.logs.append(log_entry)
 
+        # 实时推送到前端
+        if self.window:
+            try:
+                import json
+                js_code = f'if(window.addLogFromBackend){{window.addLogFromBackend({json.dumps(log_entry)})}}'
+                self.window.evaluate_js(js_code)
+            except Exception as e:
+                logger.error(f"推送日志到前端失败: {e}")
+
     def get_logs(self) -> List[Dict[str, str]]:
         """获取日志列表"""
         logs = self.logs.copy()
         self.logs = []
         return logs
 
+    def _setup_loguru_handler(self):
+        """设置 loguru 处理器，捕获所有 logger 调用"""
+        self._loguru_handler_id = logger.add(
+            LoguruWebHandler(self),
+            format="{message}",
+            level="DEBUG"
+        )
+
+    def _remove_loguru_handler(self):
+        """移除 loguru 处理器"""
+        if self._loguru_handler_id is not None:
+            logger.remove(self._loguru_handler_id)
+            self._loguru_handler_id = None
+
     def calculate(self, params: Dict[str, Any]) -> Dict[str, Any]:
         """
-        执行 EGM 计算
+        执行 EGM 计算（启动后台线程，立即返回）
 
         Args:
             params: 包含 parameter, advance, optional 的字典
 
         Returns:
-            计算结果字典
+            计算状态字典
         """
         self.logs = []  # 清空日志
+
+        # 启动后台线程执行计算
+        thread = threading.Thread(target=self._calculate_thread, args=(params,))
+        thread.daemon = True
+        thread.start()
+
+        return {"status": "started", "message": "计算已启动"}
+
+    def _calculate_thread(self, params: Dict[str, Any]):
+        """后台线程中执行计算"""
+        # 设置 loguru 处理器，捕获所有 logger.info/debug 等调用
+        self._setup_loguru_handler()
+
         self.add_log("info", "开始 EGM 计算...")
 
         try:
@@ -112,233 +173,49 @@ class EGMWebApp:
             para.voltage_n = int(optional_data.get('voltage_n', 3))
             para.max_i = float(optional_data.get('max_i', 200))
 
-            self.add_log("info", f"参数: 额定电压={para.rated_voltage}kV, 雷暴日={para.td}d, 海拔={para.altitude}m")
+            # 设置 ac_or_dc 参数
+            ac_or_dc_value = str(parameter_data.get('ac_or_dc', 'AC'))
+            para.ac_or_dc = 'DC' if 'DC' in ac_or_dc_value.upper() else 'AC'
 
-            logger.info("开始执行 _do_calculate...")
+            # 调用 main.py 的参数显示函数，日志会被 loguru handler 捕获
+            parameter_display(para)
 
-            # 执行实际计算
-            self.add_log("info", "EGM 计算中...")
-            result = self._do_calculate()
+            logger.info("开始执行 EGM 计算...")
 
-            # 调试输出
-            logger.info(f"_do_calculate 返回 keys: {list(result.keys())}")
-            logger.info(f"日志列表: {self.logs}")
+            # 调用 main.py 的核心计算函数
+            result = run_egm()
 
-            # 将日志添加到结果中（在返回之前添加最后一条日志）
             self.add_log("info", "EGM 计算完成")
 
-            # 创建一个新的返回值，确保 logs 字段被包含
-            final_result = {
-                "success": result.get("success", True),
-                "message": result.get("message", "计算完成"),
-                "data": result.get("data", {}),
-                "logs": self.logs,
-                "DEBUG_VERSION": "v2"  # 标记版本
-            }
+            # 推送结果到前端
+            self._send_result_to_frontend(result)
 
-            logger.info(f"最终返回结果 keys: {list(final_result.keys())}")
-            logger.info(f"日志数量: {len(self.logs)}")
-            logger.info(f"DEBUG: self.logs = {self.logs}")
-
-            return final_result
+            # 移除 loguru 处理器
+            self._remove_loguru_handler()
 
         except Exception as e:
             self.add_log("error", f"计算失败: {str(e)}")
             import traceback
             traceback.print_exc()
-            return {
+
+            # 移除 loguru 处理器
+            self._remove_loguru_handler()
+
+            # 推送错误到前端
+            self._send_result_to_frontend({
                 "success": False,
                 "message": f"计算失败: {str(e)}",
-                "error": str(e),
-                "logs": self.logs
-            }
+                "error": str(e)
+            })
 
-    def _do_calculate(self) -> Dict[str, Any]:
-        """执行实际的EGM计算"""
-        try:
-            h_whole = para.h_arm[0]
-        except Exception as e:
-            self.add_log("error", f"获取参数失败: {str(e)}")
-            raise
-        string_g_len = para.string_g_len
-        string_c_len = para.string_c_len
-        h_g_sag = para.h_g_sag
-        h_c_sag = para.h_c_sag
-        gc_x = para.gc_x.copy()
-        h_arm = para.h_arm
-
-        gc_y = [
-            h_whole - string_g_len - h_g_sag * 2 / 3,
-        ]
-        if len(h_arm) > 1:
-            for hoo in h_arm[1:]:
-                gc_y.append(hoo - string_c_len - h_c_sag * 2 / 3)
-
-        if len(gc_y) > 2:
-            phase_n = 3
-        else:
-            phase_n = 1
-
-        td = para.td
-        ng = func_ng(td)
-        avr_n_sf = 0
-        ground_angels = para.ground_angels
-        voltage_n = para.voltage_n
-        n_sf_phases = np.zeros((phase_n, voltage_n))
-
-        results = []
-
-        for ground_angel in ground_angels:
-            self.add_log("info", f"地面倾角 {ground_angel / math.pi * 180:.3f}°")
-            rg_type = None
-            rg_x = None
-            rg_y = None
-
-            for phase_conductor_foo in range(phase_n):
-                rs_x = gc_x[phase_conductor_foo]
-                rs_y = gc_y[phase_conductor_foo]
-                rc_x = gc_x[phase_conductor_foo + 1]
-                rc_y = gc_y[phase_conductor_foo + 1]
-
-                if phase_n == 1:
-                    rg_type = "g"
-                if phase_n > 1:
-                    if phase_conductor_foo < 2:
-                        rg_type = "c"
-                        rg_x = gc_x[phase_conductor_foo + 2]
-                        rg_y = gc_y[phase_conductor_foo + 2]
-                    else:
-                        rg_type = "g"
-
-                rated_voltage = para.rated_voltage
-
-                for u_bar in range(voltage_n):
-                    u_ph = rated_voltage / 1.732
-
-                    insulator_c_len = para.insulator_c_len
-                    i_min = min_i(insulator_c_len, u_ph)
-                    _min_i = i_min
-                    _max_i = para.max_i
-
-                    i_max = _min_i
-
-                    for i_bar in np.linspace(_min_i, _max_i, int((_max_i - _min_i) / 1)):
-                        rs = rs_fun(i_bar)
-                        rc = rc_fun(i_bar, u_ph)
-                        rg = rg_fun(i_bar, rc_y, u_ph, typ=rg_type)
-
-                        rg_line_func = None
-                        if rg_type == "g":
-                            rg_line_func = rg_line_function_factory(rg, ground_angel)
-
-                        rs_rc_circle_intersection = solve_circle_intersection(
-                            rs, rc, rs_x, rs_y, rc_x, rc_y
-                        )
-                        i_max = i_bar
-
-                        if not rs_rc_circle_intersection:
-                            continue
-
-                        circle_rc_or_rg_line_intersection = None
-                        if rg_type == "g":
-                            circle_rc_or_rg_line_intersection = solve_circle_line_intersection(
-                                rc, rc_x, rc_y, rg_line_func
-                            )
-                        elif rg_type == "c":
-                            circle_rc_or_rg_line_intersection = solve_circle_intersection(
-                                rg, rc, rg_x, rg_y, rc_x, rc_y
-                            )
-
-                        if not circle_rc_or_rg_line_intersection:
-                            if rg_type == "g":
-                                if rg_line_func(rc_x) > rc_y:
-                                    i_min = i_bar
-                                continue
-                            else:
-                                continue
-
-                        min_distance_intersection = (
-                            np.sum(
-                                (
-                                    np.array(rs_rc_circle_intersection)
-                                    - np.array(circle_rc_or_rg_line_intersection)
-                                )
-                                ** 2
-                            )
-                            ** 0.5
-                        )
-
-                        if min_distance_intersection < 0.1:
-                            break
-
-                    self.add_log("info", f"最大电流为 {i_max:.2f}, 最小电流为 {i_min:.2f}")
-
-                    curt_fineness = 0.1
-                    if i_min > i_max or abs(i_min - i_max) < curt_fineness:
-                        self.add_log("info", "最大电流小于等于最小电流，没有暴露弧。")
-                        continue
-
-                    curt_segment_n = int((i_max - i_min) / curt_fineness)
-                    i_curt_samples, d_curt = np.linspace(
-                        i_min, i_max, curt_segment_n + 1, retstep=True
-                    )
-
-                    bd_area_vec = np.vectorize(bd_area)
-                    ip_a = para.Ip_a
-                    ip_b = para.Ip_b
-
-                    bd_area_vec_result = bd_area_vec(
-                        i_curt_samples,
-                        u_ph,
-                        rc_x,
-                        rc_y,
-                        rs_x,
-                        rs_y,
-                        rg_x,
-                        rg_y,
-                        ground_angel,
-                        rg_type,
-                    )
-                    thunder_density_result = thunder_density(
-                        i_curt_samples, td, ip_a, ip_b
-                    )
-                    cal_bd_np = bd_area_vec_result * thunder_density_result
-                    calculus = np.sum(cal_bd_np[:-1] + cal_bd_np[1:]) / 2 * d_curt
-
-                    n_sf = (
-                        2
-                        * ng
-                        / 10
-                        * calculus
-                        * arc_possibility(rated_voltage, insulator_c_len)
-                    )
-                    avr_n_sf += n_sf / voltage_n
-                    n_sf_phases[phase_conductor_foo][u_bar] = n_sf
-
-                    self.add_log("info", f"相{phase_conductor_foo + 1}, 跳闸率: {n_sf:.16f} 次/(100km·a)")
-
-            result = {
-                "ground_angle": f"{ground_angel / math.pi * 180:.3f}°",
-                "tripping_rate": avr_n_sf,
-                "phases": np.mean(n_sf_phases, axis=1).tolist()
-            }
-            results.append(result)
-
-        return {
-            "success": True,
-            "message": "计算完成",
-            "data": {
-                "tripping_rate": f"{avr_n_sf:.16f} 次/(100km·a)",
-                "results": results,
-                "parameters": {
-                    "rated_voltage": para.rated_voltage,
-                    "td": para.td,
-                    "altitude": para.altitude,
-                    "ground_angels": [a / math.pi * 180 for a in para.ground_angels],
-                    "max_i": para.max_i
-                }
-            }
-        }
+    def _send_result_to_frontend(self, result: Dict[str, Any]):
+        """将计算结果推送到前端"""
+        if self.window:
+            try:
+                js_code = f'if(window.receiveResult){{window.receiveResult({json.dumps(result)})}}'
+                self.window.evaluate_js(js_code)
+            except Exception as e:
+                logger.error(f"推送结果到前端失败: {e}")
 
     def dict_to_toml(self, obj: Dict[str, Any], indent: str = '') -> str:
         """