Erythromycin ointment is generally ineffective after wound scabbing. Erythromycin ointment is a commonly used topical macrolide cream antibiotic in clinical practice because of its antimicrobial effect on most Gram-positive bacteria, some Gram-negative bacteria and a variety of microorganisms such as chlamydia and mycoplasma. The drug for common acne, purulent skin diseases (such as impetigo), small burns, ulcer surface infections have a certain therapeutic effect, but for the already scabbed wounds almost no effect, so the scabbed wounds generally can not continue to treat. Because the penetration effect of the drug on the wound scab is small. In addition, note that erythromycin ointment is contraindicated in patients who are allergic to the product, and adverse reactions such as irritation and allergic reactions may occur after the use of the drug. And specifics regarding the use of the drug should be directed by a physician. After the wound scabs, if there is no infection, there is no need for anti-infection treatment. If there is an infection, you need to clean the wound, change the dressing regularly, take amoxicillin, cefadroxil and other antibiotics. Drugs should be applied under the guidance of a doctor.