Baby sleeping voice snoring, may be caused by poor sleeping posture, lack of calcium, adenoid hypertrophy and so on. 1. Poor sleeping posture: babies sleep with their heads tilted forward, leading to poor airway, which leads to snoring. By improving the sleeping posture, such as tilting the head slightly backward, the quality of sleep will be improved. 2. Calcium deficiency: If the mother lacks calcium in late pregnancy, the baby has high risk factors such as preterm labor, or fails to take vitamin D supplements in time after birth, there may be throat snoring during sleep or feeding, which will gradually improve after vitamin D and calcium supplements. 3. Adenoid hypertrophy: adenoid hypertrophy is caused by chronic inflammation and long-term stimulation of the posterior nasal cavity, resulting in poor breathing and long-term oxygen deprivation, and in severe cases, even affect the baby’s growth and development. When the baby sleeps and snores in his throat, he should be under the professional guidance of the doctor to clarify the cause of the disease and correct treatment.