The invention provides a screen protector. The screen protector comprises a rotating shaft, a shutter coiled on the rotating shaft, a connecting seat and an actuating part, wherein the actuating part is provided with a clipping part, and the clipping part comprises a first clipping position and a second clipping position; and the rotating shaft is provided with a clamping part, the connecting seat is provided with a fastener part, the first clamping position on the actuating part is clamped with the clamping part on the rotating shaft, the second clamping position on the actuating part is clamped with the fastener part on the connecting seat, and the actuating part drives the rotating shaft to rotate relative to the connecting seat. The screen protector has the advantage of simple structure; and the invention also provides an electronic device with the screen protector.