I. Indications: 1. asthma, chronic bronchitis; 2. allergic rhinitis; 3. recurrent respiratory tract infections. The duration of the application is 0.5 hours for children aged 2-3 years, 1 hour for children aged 4-6 years, 1-2 hours for children aged 6-14 years, and 2-4 hours for children aged 14 years or above. Precautions: 1. It is not recommended for infants and children under 2 years old because of their delicate skin. 2. Children with fever, runny nose, cough and other symptoms should not be compressed. 3. Itchy, hot and slightly painful sensation at the site of the compress, and even local blisters may appear in a few patients are normal reactions. 4. It is normal to have obvious pigmentation on the skin after the application. 5. In order to ensure the therapeutic effect and avoid infection, the occurrence of blisters should be minimized. If there is burning pain on the skin, the ointment should be removed promptly and washed gently with water, scratching is strictly forbidden, and it can generally heal by itself. If there is a serious blister, you should promptly hospital dermatology consultation. 6. Severe eczema, contact dermatitis, skin damage, or allergic to the patching drug should not be applied. 7. Forbid spicy and greasy, cold drinks during the application period, and drink more water; do not swim on the day of application; pay attention to skin cleanliness, if blisters appear, wait for the blisters to subside before bathing. Fourth, the patching course: winter disease summer treatment three volt patching therapy for 3 years as a course, the disease can be properly extended for a long course of treatment.