Precautions 1. Before applying the medicine, you should take a bath, dress coolly and avoid excessive sweating; if you feel uncomfortable during the treatment, you should consult your doctor in time. If itching, heat, slight pain and other sensations or skin pigmentation occur, this is a normal reaction, do not worry too much. 2.During the application period, the diet should be light, avoid smoking, alcohol, sea food, spicy and stimulating food, frozen food, beans and soy products, stagnant food and warm and heat-prone food (such as mutton, dog meat, chicken, fish, eel, crab, shrimp, etc.). 3, the day of compressing to avoid greedy cold, do not overly blowing electric fan and stay in the too cold air conditioning room, moreover, to avoid the air conditioning cold wind blowing directly to the compressing parts, in order to facilitate the absorption of drugs. Otherwise, the body’s Yin cold can not be sent out, may affect the treatment effect. 4. Pay attention to indoor ventilation and heat protection. Appropriate activities, but do not do strenuous exercise. Contraindications 1, pregnant women, most of the external patch drugs may not be safe for pregnant women. 2, allergic to drugs should not be applied; allergic to rubber plaster should tell the doctor in advance, switch to other ways of fixation. 3.Serious skin diseases, such as skin blisters, boils, and broken skin or rashes. 4. Patients with severe urticaria. 5. Patients with disease attack, such as acute pharyngitis, fever, jaundice, hemoptysis, patients with poor glycemic control of diabetes, acute attack of chronic cough and asthma, etc. 6. Patients with thermal diseases, yin deficiency and fire, and patients with severe cardiopulmonary diseases cannot be used.