The twin pregnancy is a high-risk pregnancy, the specific precautions are as follows: 1, increase the number of maternity examinations, ultrasound examinations, twin pregnancy to the late stage should shorten the interval between maternity examinations, especially after the middle and late stage, every 2-4 weeks for a maternity examination, single velvet double sheep or single velvet single sheep need every two weeks for ultrasound examination; 2, self-monitoring fetal movement during pregnancy; 3, strengthen nutrition, pregnant women in late pregnancy than the normal increase of 200 calories. For each additional baby, 200 calories should be added, and all trace elements should be increased; 4, strengthen the training of pregnant women in class, twin pregnancy is a high-risk pregnancy, should learn knowledge to prevent preterm delivery. The twins are prone to gestational diabetes, so strengthen nutrition and control weight at the same time, balance nutrients and monitor blood pressure regularly.