There is no need to wash after applying Compound Phellodendron Bark Liquid Coating, so as not to wash the affected area to affect the absorption of the medicinal effect. Compound Phellodendron Bark Liquid Coating has the efficacy of expelling rot, reducing swelling, clearing heat, detoxification, etc. It can be used for the treatment of wound infections, sores and ulcers after ulceration, which is a yang evidence. There is no need to wash the affected area after applying Compound Phellodendron Bark Liquid Coating, because Compound Phellodendron Bark Liquid Coating needs to let the drug give full play to its effect after applying it to the affected area. It is recommended that patients can use Compound Phellodendron Bark Liquid Coating under the guidance of a doctor, and should not use the drug without authorization. In addition, pregnant women should be careful to use the compound yellow cypress liquid coating, and the compound yellow cypress liquid coating allergy is prohibited. Moreover, patients need to clear the lesions and carry out routine medication change before using Compound Phellodendron Bark Liquid Coating. The use of drugs need to follow the doctor’s instructions, do not self-authorized use.