The main working principle of Shenlang therapeutic instrument physiotherapy is through infrared rays to promote the local temperature rise, so that the local blood circulation accelerated, aseptic inflammation and other injurious diseases have a good therapeutic effect. For the Shenlang can irradiate the groin area, due to the Shenlang will cause the local temperature rise, for physiological period or should pay attention to reduce the irradiation of the groin area. Because too high temperature will damage the germ cells, for physiological period of men or women may cause some risk. In the irradiation process should also pay attention to the local skin do not burn, especially with diabetes such as the underlying disease of the patient, the local skin to the temperature sensitivity is significantly reduced, it is easy to cause localized burns, in the use of extra attention.