Whether or not erythromycin ointment can be rubbed on the vulva is a decision that needs to be made based on the type of infection. If there is a bacterial infection, it can be used, and if there is a fungal or viral infection, it is generally not recommended. If there is a bacterial infection, erythromycin ointment can be applied to the vulva, because erythromycin is an anti-inflammatory drug for bacteria, for bacterial infections caused by boils, folliculitis and so on, there is a certain therapeutic effect, you need to pay attention to the local cleanliness and hygiene during use. If the infection is fungal or viral, it is not recommended to use erythromycin, so as not to delay the condition, resulting in aggravation of symptoms. If the vulva appears red, swollen, itching, ulcers and other uncomfortable symptoms, the patient should first go to the hospital to standardize the examination, to clarify the cause of the disease, and then use the medicine under the guidance of the doctor.