Pregnancy itself is a good thing to add to the family’s import, and if you are pregnant with twins or multiple children, the family is even happier. In fact, from the medical point of view, twins, especially multiple pregnancies, are high-risk pregnancies with increased chances of various obstetric complications and complications. It is important to manage the pregnancy in a joyful way. I remember a few years ago, a patient took oral ovulation medication on her own in order to have a baby with twins, only to find out in April that she was pregnant with triplets instead of her ideal twins. The patient herself was only 1.55 meters tall and usually had an average physical condition. Her blood pressure rose at 26 weeks of pregnancy and progressed rapidly, resulting in preeclampsia at 29 weeks and termination of pregnancy at 30 weeks. The three babies, two girls and one boy, lived separately in incubators for more than a month because of premature birth and immature lungs. Mother and child four people have experienced nine deaths, the good thing is that the mother and baby ended up quite happy. The hardships and hardships can only be felt through personal experience. What is a multiple pregnancy? A pregnancy with two or more fetuses in the uterine cavity at the same time is called a multiple pregnancy. The incidence of multiple pregnancies is related to race, age and genetic factors. With the use of ovulation-promoting drugs, multiple pregnancy is a major complication of drug-induced ovulation. Early pregnancy reaction is often heavy and lasts longer; uterine volume is significantly larger than that of singleton pregnancy; late in pregnancy, the overly enlarged uterus raises the diaphragm, makes breathing difficult, fills the stomach, makes walking difficult, and causes compression symptoms such as varicose veins and edema in the lower extremities. 1. Ultrasound examination In early pregnancy, two or more fetal sacs can be seen; in middle and late pregnancy, based on sonograms of the fetal skull and spine, ultrasound has a 100% diagnostic compliance rate. 2. Doppler ultrasonography can hear two fetal heart sounds with different frequencies after 12 weeks of gestation. 3. Obstetric examination should be considered for twin fetuses if: the uterus is larger than the gestational week; multiple limbs and two or more fetal heads are palpated in the abdomen in the middle and late stages of pregnancy; two fetal heartbeats with different frequencies are heard in different parts of the body, or the fetal heart rate is heard at the same time for 1 minute of counting and the two sounds are 10 or more times different. Complications during pregnancy (1) anemia increased need for iron and folic acid in twin pregnancies (2) pre-eclampsia up to 40% of twin pregnancies are complicated by hypertensive disorders of pregnancy, four times more than in singleton pregnancies. （The incidence of hyperhydramnios in twin pregnancies is about 10%, with complications during labor (1) prolonged labor and postpartum hemorrhage due to weak uterine contractions in twin pregnancies; (2) premature rupture of membranes and umbilical cord prolapse due to increased pressure in the uterine cavity when combined with hyperhydramnios; perinatal complications (1) twin transfusion syndrome, vascular anastomosis of the placenta in twin pregnancies; (2) death of one fetus in twin pregnancies. (2) Death of one of the twins in early pregnancy if one of the twins dies intrauterine has not been found to have any effect on the survivors. (3) Neonatal asphyxia is more likely to occur due to preterm delivery. Once the diagnosis is confirmed, proper health care and management should be carried out to enhance nutrition and pay attention to adequate protein, iron, vitamins, folic acid and calcium supplements. Try to avoid overexertion. After 30 weeks of gestation, you should take more bed rest and actively prevent pregnancy complications to avoid preterm delivery. Ultrasound monitoring of fetal growth and development in utero. Grasp the indications for termination of pregnancy in late pregnancy and choose a good delivery method. Prevent postpartum hemorrhage and be prepared for all neonatal resuscitation.