1. local care: some of the baby grows flat warts, the local will be accompanied by itching symptoms, parents need to pay attention to the child to avoid repeated scratching, in order to prevent the warts broken infected, and to avoid secondary bacterial infection. 2. Antiviral drugs: flat warts are mainly due to human papillomavirus infection, so in the treatment of the doctor can be given antiviral treatment, commonly used drugs, including interferon gel, can shorten the course of the disease. 3. physical therapy: more suitable for flat warts number of patients, commonly used methods are frozen, laser, electrocautery, etc., but the treatment process is accompanied by different degrees of pain, for 3-year-old baby can be first external anesthetic, and then the corresponding treatment. It is recommended that after the diagnosis of flat warts, the baby should cooperate with the doctor to give standardized treatment, to reduce the adverse effects of the disease.