Erythromycin ointment can be applied to the lips to relieve dry and cracked lips as well as reduce swelling, but adverse reactions such as itching and burning may occur. Topical topical erythromycin ointment can be used to treat suppurative skin diseases, small burns, and common acne. When applied to the lips, it relieves dry, cracked lips and also reduces swelling, which may improve blistering of the lips and redness at the corners of the mouth. Erythromycin ointment should be used under the guidance of a medical professional. If itching, burning sensation, redness or other discomfort occurs at the site of application during the course of use, it should be discontinued immediately and washed off, and if necessary, a doctor should be consulted. The use of the drug needs to avoid contact with the eyes and other mucous membrane areas, allergic to the drug is prohibited.