Can cause the baby is difficult to sleep for many reasons, can be divided into physiological reasons and pathological reasons for two categories: 1, physiological reasons, before going to bed with strenuous exercise, nerve excitability is high, in a state of excitement, it is difficult to be quiet and can not enter the state of sleep; eaten too full or too little; indoor temperature is not suitable, too cold or too hot; do not have to develop a good sleep pattern, resulting in the time to sleep when sleep; The surrounding environment changes or is too noisy; overwork, etc. 2, pathological reasons, the baby’s physical discomfort, such as colds, fever and other diseases; growth and developmental disorders caused by sleep disorders; physical diseases, mental disorders, drug abuse, etc., can also cause difficulty in falling asleep as well as sleep breathing disorders, sleep movement disorders, etc. Usually, it is necessary to cultivate the baby to have a good sleep state, so as to improve the baby’s ability to sleep. Normally, babies should be cultivated to develop good sleeping habits, if the phenomenon of difficulty in falling asleep still occurs after adjustment, it is recommended to go to the hospital for physical examination.