diff --git a/core.py b/core.py
index a012a85..7aeda86 100644
--- a/core.py
+++ b/core.py
@@ -215,10 +215,10 @@ def thunder_density(i, td, ip_a, ip_b):  # 雷电流幅值密度函数
         )
         return r
     else:
-        if td == 20:
+        if td <= 20:
             r = -(10 ** (-i / 44)) * math.log(10) * (-1 / 44)  # 雷暴日20d
             return r
-        if td == 40:
+        if td <= 40 and td>20:
             r = -(10 ** (-i / 88)) * math.log(10) * (-1 / 88)  # 雷暴日40d
             return r
         raise Exception("检查雷电参数!")
diff --git a/main.py b/main.py
index 2dc286a..114500b 100644
--- a/main.py
+++ b/main.py
@@ -290,7 +290,7 @@ def run_egm(para: Parameter) -> dict:
                             ** 0.5
                         )
                         if distance > rc:
-                            logger.info(f"电流为{i_bar}kV时，暴露弧已经完全被屏蔽")
+                            logger.info(f"电流为{i_bar}kA时，暴露弧已经完全被屏蔽")
                             exposed_curve_shielded = True
                             break
                     animate.pause()
diff --git a/webui/src/components/ParameterForm.vue b/webui/src/components/ParameterForm.vue
index 82e98e8..c8d28b6 100644
--- a/webui/src/components/ParameterForm.vue
+++ b/webui/src/components/ParameterForm.vue
@@ -668,6 +668,11 @@ declare global {
 
 // 注册全局日志接收函数，供后端实时调用
 onMounted(() => {
+  // 程序启动时，根据雷暴日初始化地闪密度
+  if (params.parameter.td > 0 && params.advance.ng < 0) {
+    params.advance.ng = Math.round(0.023 * Math.pow(params.parameter.td, 1.3) * 100) / 100
+  }
+
   // 实时日志推送
   window.addLogFromBackend = (log: { level: string; time: string; message: string }) => {
     logRef.value?.addLog(log.level as any, log.message)