Nutrient supplements are different at different stages of pregnancy, as follows: 1.0 to 4 weeks: folic acid supplementation is needed to prevent the emergence of malformation of the nerves of the fetus and defects of the nerve organs. 2.4～8 weeks: Vitamin C and Vitamin B6 are needed to relieve bleeding gums and suppress vomiting in pregnancy. 3.8～12 weeks: Vitamin A and magnesium are needed to promote fetal development. 4.12～16 weeks: Zinc can be supplemented to prevent the fetus from developing poorly. 5.16～20 weeks: Vitamin D and calcium can be supplemented, which can promote the development of fetal teeth and bones. 6.20～24 weeks: iron supplementation is needed to prevent iron deficiency anemia. 7.24～28 weeks: you can eat more brain-supplementing food, which can promote the development of fetal brain and retina. 8.28～32 weeks: you can supplement carbohydrates, which can serve to maintain body heat. 9.32～36 weeks: dietary fiber can be supplemented to promote intestinal peristalsis, which can prevent constipation in pregnant women. 10.36～40 weeks: can be appropriate to supplement vitamin B1. It is recommended to have regular medical checkups during pregnancy and eat more food with high protein content.