Erythromycin ointment and dexamethasone ointment can be used together. Erythromycin ointment is a macrolide antibiotic and dexamethasone ointment is a hormonal topical drug that can be used together with no interaction between the two, but they should be used under a doctor’s supervision. Erythromycin ointment is used in abscesses and other suppurative skin diseases and small burns, ulcer surface infections, occasional irritation and allergic reactions, allergic to the product or allergic to the patient is prohibited, pregnant and lactating women should be used under the guidance of a physician. Dexamethasone ointment belongs to the glucocorticoid class of drugs, with anti-inflammatory, anti-allergic, anti-toxicity, anti-immunity, inhibit hyperplasia and other roles, for the treatment of a variety of non-infectious inflammatory skin diseases, pregnant women breastfeeding caution, should not be a large area, long-term use of the drug for one week after the symptoms are not relieved promptly seek medical attention, allergic to the drug is prohibited for patients. If you are unwell, it is recommended to go to a regular hospital for examination, choose the drug according to the cause of the disease, do not blindly self-medication, so as not to cause adverse reactions.