Children who are sleepy and don’t sleep can be caused by physiological factors such as poor environment, hunger, or diseases such as intestinal cramps and vitamin D deficiency. 1. Physiological factors: If the surrounding environment is too noisy, or there is a bright light stimulation, it will affect the child to fall asleep, and then sleepy does not sleep. Secondly, it may also be due to the reason that the child is in a state of hunger, due to the failure to meet the physiological needs, so the child will not go to sleep even if he is sleepy. 2. Intestinal spasm: the cause of the disease is not clear, research shows that it may be related to allergies, overeating, cold stimulation, gastrointestinal tract gas accumulation and other reasons. The main manifestation is paroxysmal acute abdominal pain, because of the physical discomfort of the affected children, so there will be sleepy and do not sleep. 3. Vitamin D deficiency: the common causes of this disease include insufficient sunshine, insufficient vitamin D supplementation, vitamin D synthesis disorders, etc., triggering factors such as living in the bedroom for a long time, breastfeeding for too long, etc., the child will be irritable, sweating and other neurological excitability enhancement of symptoms, which can sometimes be manifested in sleepy sleeplessness. Children who are sleepy and do not sleep, there may be other reasons, it is recommended to go to the hospital in time, complete the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.