The function of Gray Flavomycin is mainly antifungal, and it is mainly used for the treatment of all kinds of ringworm caused by the fungi sensitive to this product. Gray Flavomycin can inhibit the growth of fungi by interfering with the synthesis of their nucleic acid, mainly on trichophyton, microsporidium, epidermolysis bullosa and other superficial fungi have good antibacterial effect, suitable for the treatment of various ringworm caused by sensitive fungi, including ringworm of the head, tinea capitis, tinea corporis, tinea cruris, tinea pedis and tinea unguium. Contraindications include hypersensitivity to the product, porphyria, hepatic failure, and pregnancy. Adverse reactions such as headache, drowsiness, fatigue, dizziness, epigastric discomfort, nausea, diarrhea, and rash may occur after administration. Women of childbearing age and male patients should use contraception during and after treatment (at least 1 month for the former and at least 6 months for the latter). Specific medication should be administered under the guidance of a specialist, and should not be used arbitrarily on its own.