1, skin fungal disease classification: (1) superficial fungal disease, mainly invade the epidermis, nail and hair, causing the common clinical ringworm, ringworm, ringworm, ringworm and candida dermatitis, accounting for more than 90% of skin fungal disease, diagnosis by clinical manifestations plus fungal microscopy. (2) deep fungal diseases, mainly invade the dermis, subcutaneous tissue and visceral organs, the incidence is low but harmful, such as sporotrichosis, staining mycosis, cryptococcosis, systemic candidiasis, etc., the diagnosis depends on clinical manifestations plus fungal culture and histopathology. 2, shallow fungal disease prevention and control: (1) eliminate the source of infection; (2) cut off the transmission route; (3) remove susceptible factors; (4) enhance resistance; (5) early diagnosis and early treatment; (6) treatment preferred topical antifungal agents. 3, deep fungal disease susceptibility factors: (1) broad-spectrum antibiotic application; (2) traumatic examination and treatment such as intravenous cannulation; (3) the use of glucocorticoids and other immunosuppressive agents; (4) suffering from diseases with impaired immune system such as diabetes, tumors, HIV infection; (5) organ transplantation.