Many children are fine during the day, but at night they become restless and cry, and it is customary to refer to these children as “nocturnal cryers”. This is a common sleep disorder during infancy. Generally, there are only the following situations. 1, physiological crying child’s diaper wet or wrapped too tightly, hunger, thirst, indoor temperature is not appropriate, bedding is too thick, etc., will make the child feel uncomfortable and crying. For this situation, parents just need to eliminate the bad stimulus in time, the child will soon fall asleep quietly. In addition, some children will cry every night when they want to sleep, when parents can patiently lull them to sleep, the child will soon fall asleep peacefully. 2, the environment does not adapt to some children do not adapt to the natural environment, the night and day reversed. Parents work during the day he sleeps, parents rest at night he “work”. If you pick up the child and play with him, the crying will stop. For this type of children, some sedatives can be used to adjust the rest and sleep time, if necessary, you need to ask the child health doctor for some guidance. 3. Insufficient exercise during the day Some children do not have enough exercise during the day, so they refuse to sleep at night and cry more than once. These children should increase the amount of activity during the day, the child is tired, the night can be quiet to sleep. 4, improper nap schedule Some children can not get up in the morning, to 2 ~ 3 pm to nap, or nap time is too early, so early to sleep at night, wake up in the middle of the night, no one to play with and cry. These children can be awakened earlier in the morning, nap time for appropriate adjustments, so that the child has a sleep at night, you can sleep peacefully until dawn. 5, the impact of disease Some diseases can also affect the child’s sleep at night, for this, we must start from the primary disease, and actively prevent. Babies with rickets are often restless at night, and it is useless for parents to coax them. Some babies wake up suddenly in the middle of the night, crying and restless, with abnormal nervous expressions, mostly because they are too excited or stimulated during the day, and have thoughts and dreams at night. In addition, in children with pinworms, the pinworms crawl to the anal opening at night to lay eggs, causing itchy skin, and the child will also be irritable and cry.