diff --git a/server/gameserver/mapinstance.cc b/server/gameserver/mapinstance.cc
index 2bf8ab0d..f792c35e 100644
--- a/server/gameserver/mapinstance.cc
+++ b/server/gameserver/mapinstance.cc
@@ -16,6 +16,23 @@
 
 const int MAP_GRID_WIDTH = 64;
 
+static const int NAVMESHSET_MAGIC = 'M'<<24 | 'S'<<16 | 'E'<<8 | 'T'; //'MSET';
+static const int NAVMESHSET_VERSION = 1;
+
+struct NavMeshSetHeader
+{
+    int magic;
+    int version;
+    int numTiles;
+    dtNavMeshParams params;
+};
+
+struct NavMeshTileHeader
+{
+        dtTileRef tileRef;
+        int dataSize;
+};
+
 void MapInstance::Init()
 {
     current_map_block_uniid_ = MAP_BLOCK_START_ID;
@@ -61,6 +78,69 @@ void MapInstance::Init()
     }
     {
         navmesh_ = dtAllocNavMesh();
+        FILE *fp = fopen((MetaMgr::Instance()->GetResDir() + "map3.bin").c_str(), "rb");
+        if(fp){
+            //fseek(fp, 0, SEEK_END);
+            //int file_size = ftell(fp);
+            int file_size = 1;
+            if(file_size){
+                NavMeshSetHeader header;
+                size_t readLen = fread(&header, sizeof(NavMeshSetHeader), 1, fp);
+                if (readLen != 1) {
+                    fclose(fp);
+                    abort();
+                }
+                if (header.magic != NAVMESHSET_MAGIC) {
+                    fclose(fp);
+                    abort();
+                }
+                if (header.version != NAVMESHSET_VERSION) {
+                    fclose(fp);
+                    abort();
+                }
+                dtStatus status = navmesh_->init(&header.params);
+                if (dtStatusFailed(status)) {
+                    fclose(fp);
+                    abort();
+                }
+                {
+                    // Read tiles.
+                    for (int i = 0; i < header.numTiles; ++i) {
+                        NavMeshTileHeader tileHeader;
+                        readLen = fread(&tileHeader, sizeof(tileHeader), 1, fp);
+                        if (readLen != 1) {
+                            fclose(fp);
+                            abort();
+                        }
+
+                        if (!tileHeader.tileRef || !tileHeader.dataSize) {
+                            abort();
+                            break;
+                        }
+
+                        unsigned char* data = (unsigned char*)dtAlloc(tileHeader.dataSize,
+                                                                      DT_ALLOC_PERM);
+                        if (!data) {
+                            abort();
+                            break;
+                        }
+                        memset(data, 0, tileHeader.dataSize);
+                        readLen = fread(data, tileHeader.dataSize, 1, fp);
+                        if (readLen != 1) {
+                            dtFree(data);
+                            fclose(fp);
+                            abort();
+                        }
+                        navmesh_->addTile(data,
+                                          tileHeader.dataSize,
+                                          DT_TILE_FREE_DATA,
+                                          tileHeader.tileRef,
+                                          0);
+                    }
+                }
+            }
+            fclose(fp);
+        }
     }
 }
 
diff --git a/server/gameserver/metamgr.cc b/server/gameserver/metamgr.cc
index bdc6546b..a15bb070 100644
--- a/server/gameserver/metamgr.cc
+++ b/server/gameserver/metamgr.cc
@@ -1146,7 +1146,7 @@ private:
 
     }
 
-private:
+public:
     std::string res_path;
 };
 
@@ -1541,3 +1541,8 @@ MetaData::RankRoom* MetaMgr::GetRoomRank(int id )
 {
     return nullptr;
 }
+
+std::string MetaMgr::GetResDir()
+{
+    return loader_->res_path;
+}
diff --git a/server/gameserver/metamgr.h b/server/gameserver/metamgr.h
index 896b0228..3c83451c 100644
--- a/server/gameserver/metamgr.h
+++ b/server/gameserver/metamgr.h
@@ -72,6 +72,7 @@ class MetaMgr : public a8::Singleton<MetaMgr>
     std::string GetText(const std::string& textid, const std::string& def_text="");
     bool HasText(const std::string& textid);
     std::vector<std::tuple<int, std::string>>* GetTextElements(const std::string& textid);
+    std::string GetResDir();
 
     void CheckMapSpawnPoint();