Multiple pregnancy should especially strengthen the monitoring of pregnancy and regular prenatal checkups to prevent preterm delivery. 1.Supplement sufficient nutrition: eat foods with high protein, high calories, high vitamins and essential fatty acids, such as fish, meat, eggs, melons and fruits, and pay attention to supplementing iron, calcium and vitamins. 2, prevention and control of preterm labor: pregnant women with twin fetuses should increase rest time and reduce the amount of activity. Once contractions or vaginal flow occur, you should be hospitalized. For pregnant women who have a history of preterm delivery due to endocervical relaxation, endocervical cerclage should be performed at 14-16 weeks of pregnancy. 3.Timely prevention and treatment of pregnancy complications: Blood pressure should be measured regularly during pregnancy, and hyperemesis should be treated promptly. Also pay attention to any skin itching and other discomfort, and dynamically observe changes in blood bile acid and liver function. 4.Monitoring fetal growth and development: regular maternity checkups and regular ultrasound examinations to detect fetal abnormalities early.