Nine months baby head sweating can be seen in the environment temperature is high, sweat gland secretion is rich or rickets and other conditions, can be through the life care or take medication to deal with. 1. Higher environmental temperature: If the temperature of the living environment is higher, or the clothes are thicker, the baby’s head sweating will occur, you can lower the indoor temperature and reduce the baby’s clothes to improve the symptoms of sweating baby’s head. 2. Sweat gland secretion is relatively rich: due to the baby’s development is not complete, the perspiration system is not fully developed, the local sweat gland secretion is relatively rich, or the baby’s own metabolism is more vigorous, there will be baby head sweating symptoms, parents do not have to worry too much, you can not do special treatment. 3. rickets: if the baby lacks vitamin D or calcium, it is easier to cause rickets, thus appearing head sweating, crying, occipital baldness, square skull, chicken chest and other symptoms, you can supplement vitamin D and calcium under the guidance of the doctor. Because of the factors that cause head sweating in nine-month-old babies, if the symptoms are more serious or persistent, it is recommended to go to the hospital for examination and diagnosis in a timely manner, and take active treatment measures after clarifying the cause of the disease, so as to avoid the worsening of the symptoms caused by the delayed condition.