First of all, it should be clear that erythromycin ointment does not have the efficacy to get rid of fatty grains, which are known as milia, benign swellings or retained cysts originating from the skin surface or epithelium of the appendages. And erythromycin ointment belongs to macrolide antibiotics, which are suitable for purulent skin diseases such as pustules and acne, as well as infections of small burns and ulcerated surfaces. Acne vulgaris can be clinically divided into primary and secondary, with primary mostly related to genetics and secondary mostly appearing after trauma, skin diseases or receiving certain medications. Usually, no treatment is needed when there are no conscious symptoms, the cornea cyst is small, and it does not affect the patient’s normal life. If patients have treatment needs, they can use local treatment, physical therapy and other methods of medical treatment under the guidance of a doctor: 1. Local treatment: Patients can first disinfect the local skin and needles with alcohol, then use a needle to pick the skin on the surface of the papule, and then pick out the white particles. If sterilization and sterility cannot be guaranteed, the patient can seek the help of a doctor at a hospital or clinic; 2. Physical therapy: including laser ablation and electric drying methods, which are suitable for patients with serious conditions, too large or too many fatty grains or accompanied by other complications. Patients are advised to consult a pharmacist or doctor in detail and read the instructions carefully before applying the drug to avoid applying the wrong drug to delay the condition or produce other adverse reactions.