Dry skin on the feet, may be due to tinea pedis, eczema, palmoplantar pustulosis caused by the reasonable use of medication. 1. Tinea pedis: This disease is caused by fungal infections in the feet, and can be treated with antifungal drugs, such as topical miconazole nitrate cream, and oral terbinafine tablets if necessary. 2. Eczema: may be due to genetic, allergies, skin infections and other internal and external factors, first of all should be away from the allergens, can be appropriate oral glycyrrhizin compound capsule, or external use of mometasone furoate ointment and other drugs. 3. Palmoplantar pustulosis: the disease belongs to the category of aseptic pustular dermatosis, is a chronic recurrent disease, more difficult to cure, can be treated with topical glucocorticoid drugs, such as hydrocortisone butyrate cream, halometasone ointment. Dry skin on the feet, there may be other causes, it is recommended to consult a doctor in a timely manner, to clarify the cause of the symptomatic treatment.