diff --git a/main.py b/main.py
index 114500b..2706c04 100644
--- a/main.py
+++ b/main.py
@@ -117,7 +117,11 @@ def run_egm(para: Parameter) -> dict:
         n_sf_phases = np.zeros((phase_n, voltage_n))  # 存储每一相的跳闸率
         if np.any(np.array(gc_y) < 0):
             logger.info("导线可能掉地面下了，程序退出。")
-            return 0
+            return {
+                "success": False,
+                "message": "导线可能掉地面下了，程序退出。",
+                "data": None
+            }
         for phase_conductor_foo in range(phase_n):
             exposed_curve_shielded = False
             rs_x = gc_x[phase_conductor_foo]