Erythromycin ointment instructions under adverse reactions specify that irritation and allergic reactions are occasionally seen, therefore, it is possible for erythromycin ointment to cause allergy. Erythromycin Ointment is a common macrolide antibiotic for topical use, mainly for purulent skin diseases, small burns, infections and common acne, and has a relatively good antibacterial effect on Staphylococcus aureus, Streptococcus and gram-positive bacteria, it must be noted that it is not effective for skin diseases caused by fungal infections. Avoid contact with eyes and other mucous membranes, such as oral and nasal mucous membranes, etc. If there is burning sensation, itching, redness and swelling at the drug site, the drug should be stopped and the local drug should be washed, and if necessary, symptomatic treatment should be carried out in the hospital.