The main function is to be applied to the affected area, for local treatment similar to hot compress. This topical product is mainly applied to its special material to produce the effect of heat, so as to play a certain role in the treatment of patients with poor local soft tissue blood circulation, wind, cold and damp joint pain patients, or because of wind, cold and damp evil, resulting in joint or limb-related diseases, the application of similar topical products can play a certain role. Such topical products and infrared therapy, spectrum therapy, etc., other physical therapy modalities, similar in function, efficacy and effect. In the treatment of related diseases, you should choose the right and effective treatment modality for local physical therapy.