The external application method of Qingdai Powder is usually to take the appropriate amount of medicine and different solvents to become a paste, evenly applied to the surface of the affected area of the skin, and covered with clean white gauze to stay for a fixed period of time. The clinical efficacy of Qingdai Powder includes clearing heat and cooling blood (to relieve blood heat by clearing heat), reducing swelling and relieving pain (to eliminate swelling and pain), and healing sores and settling alarms, and the solvents blended for clinical use vary significantly according to the disease. For example, in the treatment of pediatric mumps, when it is necessary to clear heat and cool blood, appropriate amount of vinegar can be mixed with Qingdai powder to form a paste, and the time and frequency of external application can be assessed according to the progress of the disease. For the treatment of herpes zoster, i.e. “snake sores”, when the evidence needs to reduce swelling and relieve pain, it can be mixed with the appropriate amount of fresh egg white, and the paste can be applied to the affected area externally. For example, when treating sores, pediatric convulsions (pediatric diseases with fainting, convulsions, convulsions as the main manifestations), when identifying the need to treat the sores and fix the convulsions, it can be mixed with part of the raw oyster powder, shellfish, etc., and then applied to the affected area with the appropriate amount of white vinegar or sesame oil stirred to form a paste. Allergies should not use Qingdai powder externally, when there is a need for medication, it should be prescribed by a doctor and used, not blindly use the drug, so as not to cause adverse effects on the body.