Abstract: A portable electronic device includes a main body, a camera and a sliding cover structure. One surface of the main body has a convex portion and a planar portion. The camera and the sliding cover are provided at the planar portion. The sliding cover structure includes an inclined slideway and a cover having at least one sliding portion. The inclined slideway inclines from the convex portion to the camera to form an inclined angle with a horizontal axis of the main body. The cover slides along the inclined slideway via the sliding portion and movably covers the camera. When the cover covering the camera slides to the convex portion and partially covers the convex portion, the camera is exposed. The sliding cover structure protects the camera on the portable electronic device, and the functions of real-time camera activation are achieved while the comfort of user gripping is enhanced.