Optical lens module and electronic device

The utility model discloses an optical lens module, which comprises a lens and a variable aperture group. The lens has an optical axis. The variable aperture group is arranged on the object side of the lens, and the variable aperture group comprises a blade group and a driving part. The blade group comprises a plurality of rotatable blades which are rotatably arranged around the optical axis to form light through holes. Each rotatable blade comprises a rotating part and a shading part. The rotating part is adjacent to the shading part, and the shading part extends and shrinks gradually in the direction away from the rotating part. The rotating part is provided with a positioning hole and a dynamic hole. The rotatable blade is rotatable relative to the positioning hole, and the dynamic hole is adjacent to the positioning hole. The driving part comprises a rotating piece arranged corresponding to the dynamic hole of the rotatable blade so as to drive the rotatable blade to rotate to adjust the size of the light