A sexual aid device includes a sheath body and a sensor module. The sheath body has first and second sheath bodies capable of being assembled and separated mutually, and the first and the second sheath bodies construct a containing space. The sensor module is disposed on the first sheath body, and includes a printed circuit board, a controlling switch, a vibration switch and an outputting port. The controlling switch performs sensing and controls the vibration switch to be started. The vibration switch outputs vibration signals for controlling the output port to transmit the vibration signal out. An interactive media is used in cooperation so as to raise the practicability and sensory organ stimulation.
