diff --git a/repository/physical_section.go b/repository/physical_section.go
index 9f1b124..1af6844 100644
--- a/repository/physical_section.go
+++ b/repository/physical_section.go
@@ -121,7 +121,7 @@ func (s *PhysicalSection) bindDevicePort(port proto.Port, devicePort DevicePort)
 
 // 绑定区段边界公里标。（仅限非道岔物理区段调用）
 func (s *PhysicalSection) bindBoundaryKm(km *proto.Kilometer, port proto.Port) error {
-	if km == nil {
+	if km == nil || (km.CoordinateSystem == "" && km.Value == 0) {
 		return nil
 	}
 	switch port {
diff --git a/repository/turnout.go b/repository/turnout.go
index e214c72..08ad7e7 100644
--- a/repository/turnout.go
+++ b/repository/turnout.go
@@ -136,7 +136,7 @@ func (t *Turnout) bindLinkPort(port proto.Port, linkPort *LinkPort) {
 }
 
 func (t *Turnout) bindBoundaryKm(km *proto.Kilometer, port proto.Port) error {
-	if km == nil {
+	if km == nil || (km.CoordinateSystem == "" && km.Value == 0) {
 		return nil
 	}
 	switch port {