Infants covering the quilt hypoxia symptoms, usually have shortness of breath, lips purple, breathing difficulties, etc., according to the degree of hypoxia different symptoms are different, the specific classification is as follows: 1. Infants covering the quilt mild hypoxia usually have no obvious symptoms, at this time the baby can be seen to be more irritable, gasping more hard, shortness of breath, dyspnea. 2. If the baby covered in the quilt for too long and appeared to face, mouth purple, appeared to be very difficult to breathe, and respiratory sound is more rapid, if particularly serious, may also lead to coma. If the baby once appeared around the mouth blue, irritable or crying, etc., should be promptly sent to the hospital for rescue treatment, to avoid serious complications.