Clinical experience and research have found that the course of treatment for San Fu and San Jiu patches is three years. The efficacy is more satisfactory for some chronic and deficiency cold diseases. It is especially effective for chronic bronchitis, emphysema, bronchial asthma, variant asthma and other respiratory diseases. Because the process of invigorating Yang Qi needs time to accumulate, one or two invigorations of Yang Qi may not achieve a better therapeutic effect. Clinical observation shows that a period of three years will make the process of invigorating yang energy and improving immunity of children more complete and complete. It is recommended to choose a regular hospital for the patching, the medicine is relatively more secure.