It is relatively good to eat 3-5 walnuts per day during pregnancy. As walnuts are oily, it is not advisable to eat more of them, otherwise they will easily cause nausea, regurgitation, vomiting, diarrhea, etc. Walnuts contain a lot of protein and fat. The fatty acids in walnuts are unsaturated fatty acids, which are extremely easy to be absorbed by the body, and also contain vitamin E, calcium, phosphorus, iron and many other nutrients. Walnuts can play a role in brain health, during pregnancy, pregnant women eat walnuts every day in moderation, the fetal brain development has certain benefits, walnuts can also play the effect of laxative. However, the daily amount of walnuts should not be too much, because walnuts contain relatively more fat, eating too much may lead to excessive calorie intake, resulting in body fat, and can also affect the blood sugar, blood lipids and blood pressure of pregnant women. In addition to walnuts, the amount of nuts supplemented daily by pregnant women is generally more appropriate in about 10g.