Children’s fever, redness and swelling of hands and feet may be related to severe skin infections, allergic reactions and so on. 1. Severe skin infections: skin infections occurring in the hands and feet can lead to localized redness and swelling, and if the skin is severely infected, systemic symptoms, such as fever, body aches and pains, can occur. 2. Allergic reactions: allergic reactions in the hands and feet such as severe urticaria can appear localized redness and swelling accompanied by fever and itching, and if the range is large, there can be an increase in body temperature and fever. Children with fever, hands and feet red and swollen, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.