The precautions to be taken after electrocautery treatment of flat warts include adjusting dietary habits, preventing infection, and preventing recurrence. 1. Adjust the diet: after the electrocautery treatment of flat warts, it is necessary to pay attention to adjust the diet, healthy diet, eat more vegetables and fruits, eat less spicy and stimulating food, avoid alcohol. 2. Prevent infection: after electrocautery treatment of flat warts, the local skin may be scabbed to form a wound, pay attention to the doctor’s requirements to take anti-inflammatory drugs (such as amoxicillin, clindamycin), but also pay attention to avoid water to avoid wound inflammation. 3. In order to prevent the recurrence of flat warts after electrocautery treatment, you can also use topical creams such as imiquimod cream and recombinant interferon α2b gel under the guidance of the doctor.