diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index b2d8141..688245e 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -148,8 +148,9 @@ void Human::FindPath()
 {
     Vector2D old_pos = pos;
     {
-        float dot = Vector2D::UP.Dot(move_dir);
-        if (std::abs(dot) <= 0.001f) { //相互垂直
+        float up_dot = Vector2D::UP.Dot(move_dir);
+        bool at_left_side = Vector2D::LEFT.Dot(move_dir) > 0.0001f;
+        if (std::abs(up_dot) <= 0.001f) { //相互垂直
             //向上
             pos = old_pos + Vector2D::UP;
             if (!IsCollision()) {
@@ -161,9 +162,8 @@ void Human::FindPath()
                     return;
                 }
             }
-        } else if (dot > 0.001f) { //基本相同
-            //向右
-            pos = old_pos + Vector2D::RIGHT;
+        } else if (up_dot > 0.001f) { //基本相同
+            pos = old_pos + (at_left_side ? Vector2D::LEFT : Vector2D::RIGHT);
             if (!IsCollision()) {
                 return;
             } else {
@@ -173,37 +173,8 @@ void Human::FindPath()
                     return;
                 }
             }
-        } else if (dot < 0.001f) { //基本相反
-            //向右
-            pos = old_pos + Vector2D::RIGHT;
-            if (IsCollision()) {
-                //向下
-                pos = old_pos + Vector2D::DOWN;
-                if (!IsCollision()) {
-                    return;
-                }
-            } else {
-                return;
-            }
-        }
-    }
-    {
-        float dot = Vector2D::DOWN.Dot(move_dir);
-        if (std::abs(dot) <= 0.001f) { //相互垂直
-            //向下
-            pos = old_pos + Vector2D::DOWN;
-            if (!IsCollision()) {
-                return;
-            } else {
-                //向上
-                pos = old_pos + Vector2D::UP;
-                if (!IsCollision()) {
-                    return;
-                }
-            }
-        } else if (dot > 0.001f) { //基本相同
-            //向左
-            pos = old_pos + Vector2D::LEFT;
+        } else if (up_dot < 0.001f) { //基本相反
+            pos = old_pos + (at_left_side ? Vector2D::LEFT : Vector2D::RIGHT);
             if (!IsCollision()) {
                 return;
             } else {
@@ -213,18 +184,7 @@ void Human::FindPath()
                     return;
                 }
             }
-        } else if (dot < 0.001f) { //基本相反
-            //向左
-            pos = old_pos + Vector2D::LEFT;
-            if (!IsCollision()) {
-                return;
-            } else {
-                //向上
-                pos = old_pos + Vector2D::UP;
-                if (!IsCollision()) {
-                    return;
-                }
-            }
         }
     }
+    pos = old_pos;
 }