Salicylic acid ointment has the ability to treat corns, although it is only suitable for mild corns. Severe corns are not effective with salicylic acid ointment and need to be treated physically. Salicylic acid ointment can be used to treat localized keratosis, tinea capitis and tinea pedis. Corns are due to localized thickening of the cuticle caused by repeated friction of the skin. Salicylic acid ointment can be used, but it is only suitable for mild symptoms. If the symptoms of corns are more serious, it is recommended to choose physical treatment, such as laser treatment, freezing treatment, or surgical methods. Although salicylic acid ointment can treat mild corns, it can be irritating. Large-scale use may cause systemic toxicity symptoms, such as mental confusion, confusion, etc. Therefore, the use of the drug should be strictly in accordance with the doctor’s instructions.