This specification discloses a mask close-on image capturing device, which includes a mask with an opening, several light sources and an image capturing device installed inside the mask. Light emitted by the light sources emanates homogeneously from the opening of the mask. The lens of the image capturing device faces the opening of the mask, which is put close to an object. The homogeneous light shines on the object for the image capturing device to focus automatically and quickly capture a clear image. Therefore, the invention has the advantages of being easy and quick to operate and clear images.