The use of erythromycin ointment for scars is not helpful. Scars are secondary to skin trauma or spontaneous formation, and excessive proliferation of scar tissue appears on the surface of the skin. Clinical generally used local injection of glucocorticoid drugs, topical silicone drugs or radiation therapy after surgery and other ways to improve. And erythromycin ointment is a kind of ointment with anti-inflammatory, anti-infection and other efficacy, can treat a variety of skin infections, there is no therapeutic effect on keloid scars. If the keloid is infected, erythromycin ointment can be used externally, and then after the infection is controlled, the keloid can be treated with the above treatment to improve the symptoms. Once the scar is formed, it is difficult to treat it. You should avoid trauma and scratching in daily life. For people with scarred body, keloids may appear even when mosquito bites or folliculitis occurs, patients are advised to go to the hospital in time for treatment and standardized treatment under the guidance of doctors.