Seven and a half months baby frequent night waking can be seen in physiological phenomena, pathological conditions (such as vitamin D deficiency, gastrointestinal dysfunction, etc.), the specific need to analyze and judge according to the baby’s specific situation. 1. Physiological phenomenon: such as the baby’s night sleep environment temperature is too high or too thick blanket, so that the baby discomfort. Or for the age of the baby teeth eruption, can appear sleep is not solid and frequent night waking performance, can be accompanied by easy to cry, is a normal physiological phenomenon. 2. Pathology (1) Nutritional vitamin D deficiency rickets: in the early stage of the disease, there may be sweaty scalp stimulation, which may affect the night sleep and the above phenomenon, partly accompanied by bone changes. (2) gastrointestinal dysfunction: if the baby’s diet is not appropriate, there is a digestive tract can not tolerate, bloating and other discomfort manifestations, which can be accompanied by vomiting, affecting the night sleep, frequent night waking phenomenon can occur. Seven and a half months baby frequently waking up at night, 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.