4-year-old baby crying and stirring in the middle of the night is usually related to the bedroom environment, frightened, calcium deficiency, indigestion and other factors, it is recommended to promptly seek medical attention and treatment according to the cause. Common causes and treatment a. Physiological factors: the baby’s nervous system is not well developed, if the sleep time is too long during the day, too excited before bedtime, may lead to crying and stirring in the middle of the night, it is recommended to control the length of sleep during the day; b. Psychological factors: frightened babies may also appear in the middle of the night crying and stirring, you need to wake the baby and soothe; c. External factors: such as noisy sounds around, too bright light, uncomfortable soft and hard bed. These factors can cause your baby to sleep unsteadily, crying and stirring. Wearing clothes that are too tight, too thick or too hot can cause crying and stirring in the middle of the night. It is recommended that the child be given oral calcium gluconate, and that he or she be allowed to go outdoors and get some sunlight. Help the absorption of calcium; 2. Indigestion: eating too much at night can also lead to restless sleep and prone to gastrointestinal cramps. It is recommended that solid food should be fed at least 2-3 hours before bedtime. If there is prolonged crying and fussiness, you should go to the hospital for detailed examination and treatment. Note daily can lead the baby to moderate amount of exercise, not only can improve the ability to resist disease, but also consume physical energy to sleep more peacefully at night.