Ringworm refers to superficial fungal infection caused by dermatophytes invading the smooth skin between fingers, palms and palmar side, and the treatment plan for stubborn ringworm mainly includes strengthening nursing care, local medication and systemic administration of medication and so on. 1. Strengthen skin care. Tinea versicolor is a contagious skin disease, which can be spread through close contact and indirect contact, and can also be spread through scratching, so we must pay attention to the hygiene in the treatment process, especially the disinfection of the hand skin, to avoid cross-infection. 2. Topical medication. Topical application of some broad-spectrum antifungal drugs, the drug can be absorbed through the skin and reach the lesion site, so as to play the effect of antifungal, the more commonly used drugs are ketoconazole cream, miconazole nitrate cream. 3. Systemic administration. For some chronic stubborn tinea cruris, taking systemic administration can make the drug quickly reach the peak of blood concentration, so as to play a strong antifungal effect, which can shorten the treatment time, commonly used drugs are itraconazole, fluconazole and so on. Tinea versicolor patients should seek medical attention in time, under the guidance of the doctor for standardized treatment, the specific medication must strictly follow the doctor’s instructions.