bake result is not correct from the render effect

Hello, i’m a freshman of blender, i’m leanring baking function in blender, i add two materials(with one texture on each material) for two faces of a cube, and wanna bake them, but the bake result is a mess, can not show any texture but black, the file as attached as below, and awaiting for the reply. Thanks.

untitled.blend (546 KB)

In your example, you have to File > External Data > Pack into *.blend file, if you want us to see the textures.

Also, did you save your baked result with F3 in the UV Image Editor before adding the texture to the material?