The time to establish a maternal health record after pregnancy is usually within 12 weeks of pregnancy, preferably between 7 and 12 weeks of pregnancy. It is important to establish a maternal health record during pregnancy to facilitate the maternal and child health doctors at community health centers or township health centers to keep abreast of the health status of the pregnant woman during pregnancy. There are also follow-up visits and regular checkups to assess whether there are abnormal problems during pregnancy. If a high-risk pregnancy is found, the pregnant woman can be urged to go to a higher level hospital in time to avoid some accidents, and it also facilitates postpartum visits to the mother and management of the newborn. Before the seventh week of pregnancy, the fetus is not suitable for archiving for the time being because its development in the uterine cavity is not very stable.