Ketoconazole ointment belongs to the topical antifungal drugs, clinically, it is mainly used for all kinds of skin diseases caused by ringworm, as well as Candida caused skin diseases. Ketoconazole’s antifungal effect is mainly through the inhibition of fungal ergosterol synthesis and play a role in the skin ringworm, such as common ringworm, tinea pedis, tinea epidermidis, candida and other fungi have the role of inhibition. Therefore, ketoconazole ointment can be used to treat ringworm diseases such as tinea pedis, tinea cruris, tinea cruris, and skin diseases caused by Candida. In the process of using ketoconazole ointment, adverse reactions such as allergy and local irritation may occur. Every drug has certain contraindications, so when using ketoconazole, pay attention to the fact that patients who are allergic to any component of the drug are prohibited from using it; during the use of the drug, if the site of the drug appears to be irritated and burning sensation, you need to stop the drug in time and wash the drug clean. For patients who need to use ketoconazole ointment to treat their diseases, it is necessary to use it rationally under the guidance of a professional doctor.