Camera module base, camera module and electronic device

The invention provides a camera module base, a camera module and an electronic device. The base comprises a package base with open bottom and a barrel which is arranged on the package base. A first accommodating space which is communicated with the bottom opening is arranged in the package base. The hollow part in the barrel is communicated with the first accommodating space. The cross sectional area of the hollow part in the barrel is smaller than the cross sectional area of the first accommodating space in the package base. A clamping part which is used for clamping a filter in a second accommodating space from the edge is arranged on the inner wall of the barrel. The hollow part in the barrel is divided into two parts by the clamping part, wherein a part close to the first accommodating space is the second accommodating space. According to the invention, the filter is placed in the free space at the bottom of a lens; the thickness and the volume of the camera module base, the camera module and the electronic device are reduced; the cost of the filter is saved; and the imaging effect of the camera module is not affected.