The first 40 days of pregnancy, need to take into account the actual situation to determine what to eat, there is no “best”. Generally speaking, at this time, you need to supplement folic acid in a timely manner, there are no special dietary requirements, try to maintain balanced nutrition. Pregnancy 40 days will appear early pregnancy reaction, if the reaction is mild, diet does not have special requirements, as long as the daily intake of protein, vitamins, trace elements and other nutrients can be guaranteed, such as milk, eggs, all kinds of vegetables and fruits, meat, fish and other food can be eaten. If the early pregnancy reaction is strong, you can choose the food to eat according to your preference. Drugs, daily intake of 0.4-0.8mg of folic acid, folic acid can not only prevent fetal neural tube malformation, but also on the cleft lip and palate, megaloblastic anemia and other diseases also have a preventive effect. In addition, if there is anemia or calcium deficiency, it is also necessary to supplement the polysaccharide iron complex, calcium and other drugs in time. For those who are overweight, or suffer from diabetes, hypertension and other underlying diseases, it is recommended to consult a medical professional to formulate a detailed diet and medication plan for your health condition.