Cyanosis after discharge from the hospital after 29 weeks of pregnancy is considered to be caused by hypoxia, you need to go to the hospital obstetrics and gynecology department to do a detailed examination to find out the cause of cyanosis, and then actively take oxygen and other therapeutic measures. Cyanosis occurs after discharge from the hospital after 29 weeks of pregnancy, it is recommended to go to the hospital obstetrics and gynecology as soon as possible, if necessary, under the guidance of the doctor to improve the ultrasound examination to determine the normal fetal heartbeat, if necessary, to improve the ultrasound of the pregnant woman’s heart to exclude heart disease in pregnancy, to determine the cause of the doctor’s prescription of drugs under the guidance of the doctor to take oxygen and other therapeutic measures in a timely manner. Pay attention to relax, maintain a good state of mind, diligently count the fetal movement to observe fetal changes, abnormal fetal movement promptly inform the doctor to determine the cause of the symptoms of the treatment measures taken actively, pay attention to rest to avoid strenuous exercise.