From 3 months to 6 months before pregnancy, you can start to pay attention to dietary regimen and consume enough high-quality protein, vitamins, minerals, trace elements and moderate amount of fat daily, which are the material basis for fetal growth and development. Folic acid supplementation : Small doses of folic acid supplementation in the first three months of pregnancy and the second three months of pregnancy can reduce the occurrence of neural tube defects and the risk of recurrence Zinc-rich foods : Various plant foods with high zinc content include beans, peanuts, millet, radish, cabbage, etc. Various animal foods, such as beef, chicken liver, eggs, lamb chops and pork, also contain more zinc. Foods rich in arginine: foods rich in arginine include eel, sea cucumber, cuttlefish, octopus, wood pine fish, sesame, peanut seeds, walnuts, etc.