Pregnant women in pregnant with the second child, compared with the first child will be earlier, usually in 3-5 months when the beginning of pregnancy, but due to the different pregnant women’s weight, physical condition, diet, fetal condition, etc. There are some differences, so the time of the pregnancy may be earlier or later.1, body type: body type of pregnant women thin abdominal fat is less, the pregnancy will be more obvious, so the time of the pregnancy is relatively early. And body fat pregnant women due to loose skin, and more fat accumulation in the body, show pregnant relatively less obvious, so show pregnant time later; 2, diet: some pregnant women with poor physical condition, early pregnancy reaction is stronger, may be due to nausea, vomiting, resulting in poor appetite, malnutrition, and then the body is weak, the uterus is slow to get bigger, show pregnant time is later; on the contrary, if the pregnant woman’s physical condition is better, intake of nutrients is more, can also make the time to show pregnant time is relatively early or later; 2, diet: some of the pregnant women with poor physical condition, early pregnancy reaction is stronger, can make the time to show pregnant women, can also make the time to show pregnant women. On the contrary, if the pregnant woman is in good health, more nutritional intake, can also make the time of pregnancy is relatively early; 3, fetal status: twin and multiple pregnancies are also early in pregnancy, the earliest in 2-3 months can be pregnant. There is no certain correlation between early and late pregnancy and the growth and development of the fetus, so pregnant women should pay attention to the obstetric examination on time in order to closely observe the development of the fetus. To minimize the risk of gestational hypertension and gestational diabetes mellitus, pregnant women should take a sensible diet with adequate vitamins and proteins, and avoid overeating.