Back anesthesia training device

The utility model discloses a back anesthesia training device which comprises a needle head, a meat-imitating sponge, a reflector, a spring, a support, a circuit board and a light sensing element. The top end of the support is provided with a meat-imitating sponge, the bottom end of the support is provided with the circuit board, the needle head is inserted into the meat-imitating sponge, the support is hollow, the spring is installed in the hollow structure of the support, and the reflector is arranged in the support and located at the top end of the spring. The light sensing element is installed on the circuit board and corresponds to the position of the hollow structure of the support. According to the back anesthesia training device constructed by the utility model, the resistance when the needle head enters a human body is simulated by using the imitated meat sponge and the spring device, and the accurate position and the moving range of the needle head are confirmed by using the reflector and the light