Generally, plasters include two parts: ointment and medicine. The ointment part is relatively simple and has relatively fixed ingredients, while the medicinal part is more complex and often varies due to disease, person, time, and place. The ointment part of the plaster is mainly composed of oil pills, which is called the plaster matrix. Both of them have certain medical effects clinically. The oil moisturizes the skin and prevents the elixir from drying out. It also has the effect of detoxifying and killing insects to maintain long-lasting efficacy. Dan can kill insects and relieve heat, remove phlegm and phlegm accumulation, remove toxins and remove blood clots, and produce muscle and muscle. Plaster prescription medication is based on the general principle of meridian tropism of traditional Chinese medicine, and uses the effectiveness of the drugs to coordinate with each other to form a compound of multi-flavored drugs to exert the good effects of the drugs. Plasters generally use a wide range of medicines, forming a large compound formula to apply to complex pathological changes. Since plasters are mostly used for thin application on the surface of the skin, drugs with a strong smell are usually taken and introduced to lead a group of drugs to open knots and stagnant blood and go directly to the hospital. Therefore, it can penetrate into the skin to produce anti-inflammatory, analgesic, remove putrefaction, myogenic, astringent, activate blood circulation and remove blood stasis, stimulate menstruation and collaterals, open bones and bones, expel wind and cold, etc. There are generally two types of application sites for plasters. First, when treating carbuncles, boils, ulcers, ulcers and other diseases, plasters are usually applied to diseased areas. Second, when treating diseases such as meridians, plasters are generally applied to acupoints on the meridians of the human body. parts. The plaster affixed to the body surface stimulates nerve endings, expands blood vessels through reflection, promotes local blood circulation, improves nutrition of surrounding tissues, and achieves the effects of reducing swelling and inflammation. At the same time, the drug penetrates through the skin into the subcutaneous tissue at the acupuncture point, creating a local relative advantage in drug concentration, thus exerting a strong pharmacological effect. It has antiseptic, anti-inflammatory, analgesic and other local effects in the treatment of wounds, skin diseases, and mucosal lesions. In addition, some highly stimulating drugs can regulate body functions through nerve reflexes, promote antibody formation, and improve human immunity. At the same time, after the drug penetrates the skin and mucous membranes, it enters the systemic circulation through blood vessels or lymphatic vessels, where it can produce systemic drug effects and achieve the purpose of treating the disease.