Five-month-old babies always rub their feet, if there are no other symptoms of discomfort, is a normal phenomenon. If there are uncomfortable symptoms, may be eczema, prickly heat and other diseases. 1. Normal phenomenon: due to the baby’s bones and body organs are not yet mature, the baby is in the learning stage, there may be the case of rubbing feet. If it is not accompanied by crying, irritability, etc., no need to worry, most of the normal phenomenon, temporary observation. 2. Eczema: the cause of eczema is not yet clear, may be genetic, immune abnormalities, local infections and other factors. The child will appear red spots, pimples, blisters and other symptoms, if in the feet, due to itching discomfort, can be manifested as five-month-old baby always rub feet. 3. prickly heat: prickly heat is mainly caused by the obstruction of sweat ducts, due to the newborn’s sweat duct development is incomplete, the surrounding environment is too hot, long-term bedridden may be induced prickly heat. The child manifested as localized skin blisters, itching, tingling, etc., there will be five months of the baby always rubbing the feet of the situation. Five-month-old babies always rub their feet, there may also be other reasons, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.