One and a half year old baby sleep snoring, the cause can be physiological factors and pathological factors. Pathological factors include acute rhinitis or adenoid hypertrophy and other diseases. 1. Physiological factors: when the child’s head is in too high a position or the neck is too extended during sleep, the snoring sound can be made due to the poor respiratory tract; in addition, if the child is overworked before going to bed, the even snoring sound can also be made. 2. Acute rhinitis: When acute rhinitis occurs due to the involvement of nasal mucosa caused by viral infection, it can cause congestion, edema and increased secretion of glands in the nasal mucosa, so the child’s nose is not smooth, and he or she can have open-mouth breathing and snoring when sleeping. 3. Adenoid hypertrophy: children with repeated episodes of adenoid inflammation or inflammation of neighboring parts such as rhinitis, sinusitis and nasopharynx, can cause pathological hyperplasia of adenoids, resulting in hypertrophy, at this time, children can appear nasal symptoms, snoring or open-mouth breathing during sleep. One and a half year old baby sleep snoring, there may 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.