If your baby cries every night, you may consider that it is related to various factors such as environmental factors, calcium deficiency and indigestion. 1. Environmental factors, the baby sleeps at night if the environmental temperature is too high, too low or the environment is noisy, bright light, may affect the sleep, appear every night sleep crying symptoms. 2. Calcium deficiency, if the baby’s body lacks calcium may lead to abnormal nerve function, increased excitability, will affect the baby’s sleep, such symptoms. 3. Indigestion, if the baby has indigestion, the digestive tract is affected, the abdomen is bloated, the baby may appear every night sleep crying symptoms. The baby sleeps and cries every night, there may also be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.