diff --git a/src/bus.c b/src/bus.c
index f99e32f..3994ed6 100644
--- a/src/bus.c
+++ b/src/bus.c
@@ -22,11 +22,19 @@ int GetBusPosition()
 }
 int JudgeOnStation()
 {
-    if(abs(the_bus->distance) == rails->last_node_distance)
+    if(abs(the_bus->distance) == rails->last_node_distance)//表示逆时针
     {
+        the_bus->distance=0;
+        the_bus->rail_node_pos=rails->last_node;//逆时针往上一个
         return BUS_TRUE;
     }
-    else 
+    else if(abs(the_bus->distance) == rails->next_node_distance)//表示顺时针
+    {
+        the_bus->distance=0;
+        the_bus->rail_node_pos=rails->next_node;//顺时针往下一个
+        return BUS_TRUE;
+    }
+    else
     {
         return BUS_FAlSE;
     }