diff --git a/server/gameserver/mapinstance.cc b/server/gameserver/mapinstance.cc
index 6c6410bd..d4664c05 100644
--- a/server/gameserver/mapinstance.cc
+++ b/server/gameserver/mapinstance.cc
@@ -814,6 +814,7 @@ void MapInstance::LoadHouse()
             }
         }
         {
+            //求三角形min_y max_y
             things_.reserve(1024 * 10);
             auto cb =
                 [this] (mc::ColliderNode* node)
@@ -835,7 +836,8 @@ void MapInstance::LoadHouse()
                                     tri.min_y = tri.vert0.y;
                                     tri.max_y = tri.vert0.y;
                                     for (int ii = 1; ii < 3; ++ii) {
-                                        float y = mesh_collider->mesh.vertices[i + ii].y;
+                                        int vp = mesh_collider->mesh.raw_triangles[i + ii];
+                                        float y = mesh_collider->mesh.vertices.at(vp).y;
                                         if (y < tri.min_y) {
                                             tri.min_y = y;
                                         }
diff --git a/server/gameserver/mt/MapCollider.cc b/server/gameserver/mt/MapCollider.cc
index 100643e4..317918c8 100644
--- a/server/gameserver/mt/MapCollider.cc
+++ b/server/gameserver/mt/MapCollider.cc
@@ -37,7 +37,6 @@ namespace mt
 
     void MapCollider::Load(const std::string& filename)
     {
-        #if 0
         a8::XObject xobj_root;
         xobj_root.ReadFromFile(MetaMgr::Instance()->GetResDir() + filename);
         auto xobj_nodes = xobj_root.At("nodes");
@@ -50,7 +49,6 @@ namespace mt
             }
             nodes_[node->name] = node;
         }
-        #endif
     }
 
     mc::ColliderNode* MapCollider::GetNode(const std::string& name)