Ringworm on the corners of the mouth is generally considered to be ringworm, patients can take medication as prescribed by the doctor. Ringworm is usually caused by fungal infections such as Trichophyton rubrum and Trichophyton mentagrophytes, which often lead to fungal infections in superficial parts of the skin other than the scalp, hands, feet, groin and other parts of the patient. The disease is most common in the trunk, arms and other parts of the body, but some patients may also appear in the face, and the rash is usually diffuse, can be spread to the affected area around the skin, accompanied by itching symptoms. The main principle of treatment is antifungal therapy, patients can follow the doctor’s instructions to use miconazole cream, ketoconazole cream and other imidazole antifungal topical drugs, or terbinafine hydrochloride cream, Butenafine cream and other acrylamide antifungal topical drugs applied to the corners of the mouth for treatment. At the same time, if the patient’s condition is more serious, can use terbinafine tablets, itraconazole capsules and other drugs oral treatment. It is recommended that patients with ringworm at the corners of the mouth should seek medical advice in a timely manner, and choose the appropriate medication under the guidance of the doctor according to their actual condition.