Maternity checkups can be done in different hospitals. In the early and middle stages of pregnancy, pregnant women can choose different public hospitals according to their actual situation. After 28 weeks of pregnancy, it is recommended to choose a fixed hospital to do prenatal checkups, because after 28 weeks, the situation may change drastically and the doctor needs to have some understanding of the basic condition of the pregnant woman. If the pregnant woman changes hospitals frequently, each hospital does not know the pregnant woman very well. If you are a senior pregnant woman or have other abnormalities, it is recommended to go to a prenatal diagnostic center for a maternity checkup. When changing hospitals for maternity checkups, pregnant women need to pay attention to the fact that they have to do liver function and blood tests again at the new hospital, or prepare the report card of the previous hospital tests so that the doctor can understand the condition of the pregnant woman and the fetus in more detail. In addition, there are more tests that need to be done during pregnancy, and some tests need to be booked in advance, such as 4D ultrasound. It is recommended that pregnant women determine the hospital for the test in advance so as not to miss the most suitable time for the test. In short, after 28 weeks, it is recommended that pregnant women should choose the same doctor at the same hospital on a relatively regular basis so that the doctor can provide targeted guidance to pregnant women during each checkup, such as choosing vaginal delivery or cesarean delivery. If you choose vaginal delivery, you can be hospitalized when you have an omen of labor, while for cesarean delivery you need to be hospitalized at least one day in advance.