A waterproof phone case includes a front shell and a rear shell. The front shell is rotatably connected with the rear shell. The front shell cooperates with the rear shell to form an accommodating space configured to accommodate a mobile phone. An area of the front shell corresponding to the accommodating space includes a viewing area. A rotating portion and magnetic portions are arranged on a rear surface of the rear shell. The rotating portion is detachably connected with a rear hanger. The magnetic portions are magnetically connected with the rear hanger. Two different positions of the rear hanger are magnetically matched with the magnetic portions through the rotating portion of the rear shell.