OrthogonalTiledMapRenderer和普通的Spritebatch渲染一个白框？

I am using Libgdx to render a TileMap as a background of my game. I might render some different layers later on. Without the tilemap render and a single background picture it works correctly! Something strange happens when i use the TiledRender just take a look at it: I am using Libgdx to render a TileMap as a back