The invention provides a sharp corner resistance testing device and method for a rope. The sharp corner resistance testing device comprises a base, a first fixing frame, a second fixing frame, a fixing clamp and a driving shaft; an electric control switch and an emergency stop button are arranged on the base; a first sliding rail is arranged on the first fixing frame, the first fixing frame and the base are fixedly connected, and a pulley is arranged on the first sliding rail; the first sliding rail is used for adjusting the height of the rope fixed to the pulley; a second sliding rail is arranged on the second fixing frame which is fixed to the base, the second sliding rail and a sharp block are fixedly connected through a connecting rod, and the second sliding rail is used for limiting the moving direction of the sharp block; the fixing clamp is arranged on the base and used for fixing the rope; and the driving shaft makes contact with the sharp block and is used for driving the sharp block to move. According to the sharp corner resistance testing device and method for the rope, the sharp corner resistance degree of the rope can be tested more accurately, operation is convenient,and the automatic degree is high.