Erythromycin has no role in treating eye bags. Eye bags are the normal structure of the organism, due to excessive internal fat filling resulting in outward expansion, normal conditions do not recommend treatment; if it seriously affects the appearance of the face, you can remove the excess fat through surgery. Erythromycin belongs to the macrolide class of antibacterial drugs, eye ointment is mainly used for eye infections, such as conjunctivitis, blepharitis and trachoma. Erythromycin eye ointment may lead to irritation around the eyes after medication, manifested as eye pain, blurred vision, etc.; it may also lead to allergic reactions, manifested as redness and burning sensation of the eyes and other symptoms. If the symptoms are severe, wash with water and consult with your physician if necessary. The ointment should be applied to the eyelids and should not come into contact with the eyes or other mucosal tissues. Patients should use it under the guidance of a medical professional and strictly follow medical advice.