4-year-old child foot soak can be soaked. If the child has cold hands and feet, soak the feet in water less than 50 degrees for 15 minutes a day. Do not exceed 15 minutes on it, because the time is long instead of having bad side effects, so it is good to give children a foot soak, for children with cold hands and feet is good. Do not soak more, the time should be controlled, there is no problem. Foot soak is mainly to improve the circulation of the hands and feet, the effect of replenishing Yang Qi is better, so usually more foot soak, to develop a foot soak habit is very good. Time should not be more, while the temperature control. If it is an adult foot soak, do not go higher than 40 degrees of water temperature, time do not exceed half an hour. So, 4-year-old children soak their feet or can.