After pregnancy should be supplemented with nutrients according to different pregnancy time, there are the following: First, is in early pregnancy, it is important to supplement folic acid, folic acid can participate in the differentiation of cells and prevent the fetus from neural tube malformation, in addition, folic acid is also beneficial to promote the production of red blood cells and prevent the occurrence of physiological anemia. Second, is in the middle of pregnancy fetal growth and development rate is relatively fast, to appropriately increase the intake of high-quality protein and calcium, phosphorus, iron, vitamins and other nutrients, protein is conducive to promote the proliferation of tissue cells; calcium, phosphorus can promote fetal bone development; iron can promote the production of red blood cells, improve the hemoglobin content; vitamin C can improve the immunity of the pregnant body, reduce the occurrence of diseases during pregnancy; vitamin Vitamin B can participate in a variety of biological transformation processes in the body. In addition to supplementing nutrients during pregnancy, the intake of sugar and salt should be properly controlled.