Semiconductor laser therapeutic instrument

The utility model discloses a semiconductor laser therapeutic instrument, and belongs to the technical field of medical instruments. The semiconductor laser therapeutic instrument comprises a therapeutic instrument body, an infrared emission port is formed in the middle of the rear wall of the therapeutic instrument body, an infrared sensor for controlling on-off of laser emission is arranged in the infrared emission port, and the exterior of the emission end of the infrared sensor is sleeved with a sealing piece; the sealing piece comprises a metal retainer embedded in the infrared emission port, and the front end of the metal retainer is sleeved with a sealing ring. The structure of the existing therapeutic apparatus main body is improved, the infrared sensor on the rear wall of the therapeutic apparatus main body is utilized to sense whether the therapeutic apparatus main body is separated from the wrist of a patient, and once the infrared sensor senses that the therapeutic apparatus main body is separated