The most common factor is bacterial infection, when the body has bacterial infections, such as cellulitis or boils, carbuncles and sores on the epidermis, there will be abnormal yellow discharge from the epidermis. 2. If the infection is aggravated by viral infection or combined with viral infection, there will also be yellow discharge with cloudy white discharge, or white discharge. If bacterial infection or viral infection is accompanied by fungal infection, white granular secretion will be attached to the mucous secretion, such as the skin epidermis, oral epidermis, mucous membrane epidermis or around the vagina and anus.