Baby sleep always wake up and cry may be due to external factors, or gastrointestinal tract dysfunction, parasitic infections and so on. 1. External factors: the baby is too excited before going to bed, or sleep frightened, or the external environment is too hot, noisy, etc., affecting the baby’s sleep, thus appearing always awake, crying phenomenon. 2. Gastrointestinal tract dysfunction: the baby may have eaten too much or eaten too much gas-producing food before going to bed, resulting in gastrointestinal tract gas or indigestion, thus making the baby uncomfortable, always wake up, crying symptoms. 3. Parasitic infection: it may be that the baby has a parasitic infection, such as roundworm, pinworm infection, etc., during sleep, perianal itching is obvious, thus appearing the symptoms of restless sleep. The baby sleep always wake up also crying may also be related to other reasons, be sure to go to the hospital in time.