The baby cries after a short sleep may be caused by physiological factors, but also may be related to indigestion, colds, calcium deficiency and other diseases. 1. Physiological factors, if the baby sleeps in the process of urine, hungry, or cover the baby too thick may affect the baby’s sleep, so there will be a moment of sleep on the crying symptoms. 2. Indigestion, if the baby has indigestion, the body digestion and absorption is affected, the accumulation of food in the gastrointestinal tract, may affect the baby to sleep, this symptom. 3. Colds, some babies have colds due to the invasion of pathogens, the thermoregulatory center is affected, which may lead to discomfort, this symptom. 4. Calcium deficiency, if the lack of calcium in the body may affect the baby’s normal sleep, sleep restless crying, irritability, night terrors, night sweats (abnormal sweating after falling asleep, waking up sweating stops) and other reactions. The baby cries after sleeping for a while, 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.