Disclosed in the present application are a camera module and an electronic device. The camera module comprises a photosensitive chip, a driving piece, a transmission mechanism, a lens bracket and a lens. The lens is opposite to the photosensitive chip, and is movably arranged in the lens bracket. The transmission mechanism is respectively connected to the lens bracket and the driving piece. When the driving piece is started, the driving piece drives the transmission mechanism to at least partially rotate in a first circumferential direction, and the transmission mechanism drives, by means of the lens bracket, the lens to move in a direction away from the photosensitive chip. When the lens is subjected to an external force, the lens moves towards a direction close to the photosensitive chip, and the lens drives, by means of the lens bracket, the transmission mechanism to at least partially rotate in a second circumferential direction, the first circumferential direction being opposite to the second circumferential direction.