Children’s feet long bag hard and itchy situation, may be due to mosquito bites, urticaria, common warts and other factors, can choose to topical drugs, oral medication, physical therapy methods to alleviate. 1. Mosquito bites: small children with hard bags on the feet, if the phenomenon occurs in the mosquito more places, may be due to mosquito bites, can be applied through the topical glycerine lotion, to achieve the purpose of stopping the itching. 2. hives: some patients may be in contact with allergens, which induced the local appearance of the foot bag hard and itchy symptoms, can be used externally glycerine lotion, oral loratadine and other drugs to improve the patient’s symptoms. 3. common warts: children feet long hard and itchy, may also be and human papilloma virus infection caused by common warts, can cooperate with the doctor to choose freezing, laser, electrocautery and other physical methods of treatment. It is recommended to use the medication under the guidance of the doctor, not blindly self-medication, in order to avoid the adverse effects.