The performance of the baby after oxygen deprivation mainly includes poor response, bruising around the mouth, respiratory difficulties, etc. The specific analysis is as follows: 1. Poor response: the baby’s response to external stimuli after oxygen deprivation will be relatively poor, such as playing the soles of the feet when there is no obvious response or only a slight frown, drowsiness, sucking ability to become weak. 2. bruising around the mouth: when hypoxia, the baby’s skin will be pale and the color around the mouth will be bruising. 3. Difficulty in breathing: the respiratory rhythm will change after hypoxia, such as accelerated respiratory rhythm, irregular rhythm, accompanied by dyspnea, nasal fluttering, positive triple concave sign, etc., which indicates that the baby has hypoxemia. If your baby suffers from hypoxia and develops the above symptoms, take your baby to the hospital for examination and treatment under the guidance of a doctor.