diff --git a/src/Mod/FreeCADExchange/AutoRouting.py b/src/Mod/FreeCADExchange/AutoRouting.py
index caab10e..686e27a 100644
--- a/src/Mod/FreeCADExchange/AutoRouting.py
+++ b/src/Mod/FreeCADExchange/AutoRouting.py
@@ -1371,6 +1371,19 @@ def _missing_endpoint_label(sample, side):
     return label
 
 
+def _missing_endpoint_side_summary(sample):
+    missing_sides = []
+    if sample.get("start_found") is False:
+        missing_sides.append("起点")
+    if sample.get("end_found") is False:
+        missing_sides.append("终点")
+    if not missing_sides:
+        return ""
+    if len(missing_sides) == 2:
+        return "（缺失：两端）"
+    return "（缺失：{0}）".format(missing_sides[0])
+
+
 def format_eplan_connection_route_report(report):
     message = "批量生成布线连接完成：routed={0}, collision_warnings={1}, missing_terminals={2}".format(
         report.get("routed", 0),
@@ -1457,9 +1470,10 @@ def format_eplan_connection_route_report(report):
             message += " 请先从 QET 重新导入/更新工程端子，使端子 UUID 不再是 local:...。"
     sample = (report.get("missing_endpoint_samples") or [None])[0]
     if sample:
-        message += "\n缺失示例：{0} -> {1}".format(
+        message += "\n缺失示例：{0} -> {1}{2}".format(
             _missing_endpoint_label(sample, "start"),
             _missing_endpoint_label(sample, "end"),
+            _missing_endpoint_side_summary(sample),
         )
     return message
 
diff --git a/tests/python/freecad_exchange_auto_routing_test.py b/tests/python/freecad_exchange_auto_routing_test.py
index be90d14..0573821 100644
--- a/tests/python/freecad_exchange_auto_routing_test.py
+++ b/tests/python/freecad_exchange_auto_routing_test.py
@@ -1848,6 +1848,28 @@ class AutoRoutingTest(unittest.TestCase):
 
         self.assertIn("缺失示例：device-a/A1 (terminal-a) -> device-b/B1 (terminal-b)", message)
 
+    def test_route_eplan_connections_report_identifies_which_endpoint_is_missing(self):
+        _install_fake_freecad()
+        _terminal_objects, _wiring_objects, _routing_network, auto_routing = _reload_modules()
+        report = {
+            "routed": 0,
+            "collision_warnings": 0,
+            "skipped_missing_terminal": 1,
+            "missing_endpoint_samples": [
+                {
+                    "start_terminal_uuid": "terminal-start",
+                    "start_found": True,
+                    "end_terminal_uuid": "terminal-missing",
+                    "end_found": False,
+                }
+            ],
+        }
+
+        message = auto_routing.format_eplan_connection_route_report(report)
+
+        self.assertIn("缺失示例：terminal-start -> terminal-missing", message)
+        self.assertIn("缺失：终点", message)
+
     def test_route_eplan_connections_report_calls_out_clearance_collision_kind(self):
         _install_fake_freecad()
         _terminal_objects, _wiring_objects, _routing_network, auto_routing = _reload_modules()