A wireless motion monitoring device adaptive to incorporate an equipment control module of an exercise equipment is provided to detect the motion signal of a user. The wireless motion monitoring device includes a motion signal receiving module electrically coupling to a circuit board of the equipment control module. A wireless motion signal detecting module is able to detect the motion signal of the user. The motion signal is transmitted by a wireless transmitter which is arranged in the wireless motion signal detecting module. A wireless receiver is arranged in the motion signal receiving module for receiving the motion signal transmitted by the motion signal detecting module. After the motion signal receiving module receives the motion signal transmitted from the motion signal detecting module, the motion signal is transmitted to the equipment control module of the exercise equipment and displayed on a display unit of the equipment control module.