Candidiasis is caused by Candida albicans infection, Candida albicans can be parasitic on the skin and mucous membrane of normal people, but in infants and children with malnutrition, and severe wasting diseases (diabetes, hematological diseases, tumors, etc.), or long-term heavy use of broad-spectrum antibacterial agents, corticosteroids, immunosuppressants, etc., can induce Candida infection for skin mucosal disease, and in rare cases can cause visceral infection. The skin may appear as well-defined erythema or papules, which may fuse into irregular patches; AIDS can cause Candida infection. Oral mucosal candidiasis can be divided into three categories; 1, acute pseudomembranous candidiasis, also known as snow mouth, the formation of white fluffy plaque film, like curd, not easy to wipe off, forcibly tear off the formation of bleeding surface, and will soon be covered by a new plaque film. 2, chronic proliferative candidiasis, also known as leukoplakia candidiasis, oral mucosa with hard and white plaques, can exist for many years, sometimes accompanied by skin candidiasis. 3, chronic atrophic candidiasis, i.e. brachycephalic stomatitis, belongs to the denture bearing area with diffuse inflammation, often accompanied by stomatitis.