Tinea cruris is always recurring, considering the following situations: 1, patients are too obese, sweating more caused by local temperature is high, suitable for fungal growth, so it is easy to cause the recurrence of the rash. 2, due to the weather is too hot, resulting in the local stifling, humidity, is conducive to the breeding of the fungus. 3, the patient suffers from severe tinea cruris, ringworm and other fungal infectious diseases, through the hands of scratching and spreading and caused by tinea cruris recurrence. 4, not after the correct antifungal treatment, such as external use of clotrimazole ointment, oral terbinafine hydrochloride tablets, so it causes repeated rash. 4, not after the correct antifungal treatment, such as external clotrimazole ointment, oral terbinafine hydrochloride tablets, so cause the recurrence of rash.