diff --git a/README.md b/README.md
index 1839c36..0071a94 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ Converter.exe --format <FORMAT> --input <INPUT> --output <OUTPUT> [OPTIONS]
 
 ```sh
 # from osgb dataset
-Converter.exe --format osgb -input E:\osgb_path -o E:\out_path  --yUpAxis true
+Converter.exe --format osgb -input E:\osgb_path --output E:\out_path  --yUpAxis true
 
 # from single shp file
 Converter.exe --format gdal --input <Shapefile Path> --output <DIR>  --field height --layer <Shapefile Name>
@@ -60,7 +60,7 @@ Converter.exe --format gdal --input <GDB Path> --output <DIR>  --field height --
 - `--thread` 处理线程数量（仅对OSGB生效）
 - `--yUpAxis` 是否将gltf模型转为y轴朝上  
   
-  `yUpAxis` 可选： true, false   
+  `yUpAxis` 可选： true, false  
   如果是用`Cesium for Unreal`加载数据，需要启用yUpAxis
  
 # 数据要求及说明
diff --git a/include/OSGBConvertJob.h b/include/OSGBConvertJob.h
index d6126b6..f74129d 100644
--- a/include/OSGBConvertJob.h
+++ b/include/OSGBConvertJob.h
@@ -70,7 +70,9 @@ namespace scially {
             }
 
         }
-        void setYUpAxis(bool y) {osgbLevel.setYUpAxis(y);}
+        void setYUpAxis(bool y) {
+            osgbLevel.setYUpAxis(y);
+        }
 
         OSGBLevel osgbLevel;
         bool isSucceed;
diff --git a/src/OSGBConvertJob.cpp b/src/OSGBConvertJob.cpp
index 9ec0be8..9be1735 100644
--- a/src/OSGBConvertJob.cpp
+++ b/src/OSGBConvertJob.cpp
@@ -36,7 +36,11 @@ namespace scially {
         // 合并子节点
         BaseTile baseTile;
         baseTile.geometricError = 2000;
-        baseTile.asset.assets["gltfUpAxis"] = "Y";
+        if(yUpAxis)
+            baseTile.asset.assets["gltfUpAxis"] = "Y";
+        else
+            baseTile.asset.assets["gltfUpAxis"] = "Z";
+
         baseTile.asset.assets["version"] = "1.0";
         baseTile.root.transform = TileMatrix::fromXYZ(lon, lat, height);
         baseTile.root.geometricError = 1000;
diff --git a/src/OSGBLevel.cpp b/src/OSGBLevel.cpp
index 367d6c1..0d36be4 100644
--- a/src/OSGBLevel.cpp
+++ b/src/OSGBLevel.cpp
@@ -60,6 +60,7 @@ namespace scially {
 
         for (int i = 0; i < lodVisitor.subNodeNames.size(); i++) {
             OSGBLevel subLevel(lodVisitor.subNodeNames[i]);
+            subLevel.setYUpAxis(yUpAxis);
             if (subLevel.getAllOSGBLevels(maxLevel)) {
                 subNodes.append(subLevel);
             }
@@ -89,7 +90,10 @@ namespace scially {
 
         // update root tile
         tile.geometricError = 2000;
-        tile.asset.assets["gltfUpAxis"] = "Y";
+        if(yUpAxis)
+            tile.asset.assets["gltfUpAxis"] = "Y";
+        else
+            tile.asset.assets["gltfUpAxis"] = "Z";
         tile.asset.assets["version"] = "1.0";
 
         tile.root.children.append(childTile);
diff --git a/src/main.cpp b/src/main.cpp
index b5dbe1d..f52d8a0 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -84,7 +84,7 @@ int main(int argc, char** argv){
       
     }
     else{
-        qCritical() << "Only support osgb and shape format";
+        qCritical() << "Only support OSGB and GDAL format";
         return 1;
     }
     qInfo() << "Finish convert in " << beginTime.secsTo( QTime::currentTime()) << "s";