The reason why 5-year-old children do not sleep at night: 1, to exclude the child during the day to sleep is not too much, which led to the corresponding shortening of the night sleep time, this situation parents need to exclude, belongs to the physiological reasons, do not have to worry too much. 2, parents should give the child a blood test and calcium, to exclude the child does not sleep at night is not due to a lack of calcium caused by the child. If the blood calcium is low, you can give your child some calcium gluconate oral solution.3. Parents should take their children to the Department of Neurology of the Children’s Hospital to see if their children’s poor sleep at night is due to a sleep disorder. Sleep disorders are caused by mental abnormalities of the nervous system, and the child should be given psychological counseling in a timely manner. If it is serious, you can give your child some medication for poor sleep, such as Sulodexamfetamine.