Adequate sleep time is important for the growth of 2-year-old babies, and it is necessary to cultivate and strengthen the baby’s sleep time for a long time to enhance the quality of sleep. If a 2-year-old baby does not sleep in the middle of the night, parents can start from adjusting sleep habits, improving sleep environment, adjusting dietary habits, avoiding bedtime excitement, etc. 1, adjusting sleep habits: for example, during the daytime as much as possible, let the baby sleep less, and engage in more games and play. Lunch break can sleep for a while, but not more than 2 hours. The purpose is to consume more of the baby’s physical strength, in the evening there will be a sense of sleep and desire to go to sleep faster; 2, improve the sleep environment: the indoor temperature should be appropriate, the light should be dimmed, the environment should be kept quiet, in order to minimize the baby’s sleep interference to prevent the phenomenon of the middle of the night does not sleep; 3, adjust the dietary habits: some of the babies do not sleep in the middle of the night, there may be a certain relationship between the food and drink! For example, eating too much, too mixed, too greasy or cold food before going to sleep can lead to food accumulation or indigestion. In this case, we should pay attention to the baby before going to sleep, try not to eat too much food, at the same time can be oral intestinal probiotics, improve intestinal function; 4, avoid bedtime excitement: before going to bed, do not let the baby play too excited, or let the baby to watch stimulating cartoons, or to tell some stimulating stories, to tell warm stories to stabilize the mood. You can also take a warm bath before the baby goes to bed, relax the body, listen to soft and gentle music, to help the baby fall asleep better; 5, supplemental vitamin D, calcium: vitamin D or calcium deficiency will lead to the baby’s cerebral cortex excitability, parents need to take their babies to the hospital in a timely manner, laboratory tests of vitamin D and calcium levels. If there is indeed a vitamin D and calcium deficiency, you need to give timely supplementation, and at the same time let the baby more sunshine. When vitamin D and calcium levels increase, the baby’s symptoms of not sleeping in the middle of the night will gradually improve; 6, remove disease factors: for example, the baby accompanied by fever, sneezing, runny nose, coughing and other symptoms of upper respiratory tract infections, or nausea, vomiting, abdominal distension, abdominal pain and other symptoms of acute gastroenteritis. Babies may also have symptoms of not sleeping in the middle of the night due to discomfort, and need to be actively treated for the primary disease. If it is caused by upper respiratory tract infection, need to give timely anti-inflammatory, anti-viral treatment, symptomatic oral anti-flu medication; if due to acute gastroenteritis, need to strictly control the baby’s diet, at the same time oral intestinal probiotics to improve the intestinal tract function; if the local presence of inflammation, need to give timely anti-inflammatory, anti-viral treatment. When the symptoms are removed, the baby’s symptoms of not sleeping in the middle of the night will be improved.