Six weeks of pregnancy, i.e. 42 days of pregnancy, belongs to early pregnancy, which is a critical time for fetal development, during which attention should be paid to micronutrient supplementation and keeping away from teratogenic substances. The normal pregnancy cycle is 37-42 weeks, i.e. 259-294 days. The first three months of pregnancy belong to the early pregnancy period, the middle pregnancy period is from 3 to 8 months, and the later period is the late pregnancy period. Six weeks of pregnancy is 42 days of pregnancy, i.e. the early stages of pregnancy, during which early pregnancy reactions such as nausea, vomiting, and in severe cases, inability to eat may occur. In addition, early pregnancy is a critical period for the development of the fetal nervous system. Pregnant women should take folic acid, vitamins and trace elements to avoid neurodevelopmental defects, and pay attention to rest and eat more fresh vegetables and fruits to maintain adequate nutrition. In addition, pregnant women are under tremendous physical and mental stress during pregnancy, and their families should give adequate care and support.