Both twins and singletons have their own benefits, but twins have a higher risk of pregnancy compared to singletons. Twins have certain benefits compared to a singleton in that you can get two children at once, but twins have a high risk during pregnancy because the pregnancy is more burdensome for the mother, and the rate of miscarriage and mortality in twin pregnancies is also higher than in singletons, with a high rate of complications during pregnancy, and twins are also prone to preterm labor in late pregnancy, which may result in a low-birthweight baby and more complications. A singleton pregnancy has only one fetus in the uterus, which is less likely to be dangerous, and the pregnancy will be relatively easy, generally more nutritious, and less likely to result in a low-birth-weight baby. Although the risk of twins is higher, with the development of medical technology, the probability of danger has been reduced, so if twins do not need to worry too much, according to the doctor’s advice to carry out regular obstetric examination, can reduce the risk. In addition, since twins need more nutrition, it is recommended to strengthen nutrition in general.