The baby always lying down, consider and physiological and pathological factors (bloating, etc.) related. 1. Physiological factors: the baby is always lying on his back, may be due to physiological factors, such as the baby in the extreme insecurity, will feel often lying on his back will be more secure. Especially when the baby is not born, the position within the amniotic fluid, may be lying down. If there are no other symptoms, no special treatment is needed. 2. Pathological factors: part of the baby is always lying on the phenomenon, may be due to pathological factors, such as the existence of the baby has indigestion, may be due to abdominal distension, abdominal pain and other symptoms of discomfort, so that the symptoms of lying on the ground. Because lying down will let the abdominal muscles in a relaxed state, can also reduce the baby bloating, abdominal pain symptoms. The baby is always lying down, there may be other reasons, it is recommended to go to the hospital, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.