Pregnancy is divided into three stages: early pregnancy, mid-pregnancy and late pregnancy, and the performance of different stages of the whole pregnancy process is different. Early pregnancy is generally the first 3 months of pregnancy, mainly nausea, vomiting, loss of appetite, breast swelling and pain and other early pregnancy reactions, usually after 3 months of pregnancy symptoms will gradually reduce and disappear. Mid-pregnancy is 4-7 months, this stage of fetal development is relatively fast, the development of various organs, pregnant women can feel the fetal movement, pregnant women early pregnancy reaction is also reduced or disappeared, pay attention to a reasonable increase in nutrition to meet the needs of fetal development. Late pregnancy is the second trimester, pregnant women are heavy, fetal movement is obvious and regular, at the same time there are false contractions and other symptoms. Pregnant women should closely observe the fetal movement and fetal heartbeat, and make good prenatal checkups and preparations, and so on. Therefore, the symptoms at different stages of pregnancy are not the same, so it is important to pay attention to regular checkups and increase nutrition.