Aspect 1: Healthy diet Before pregnancy, you need to ensure a balanced nutrition, consume an appropriate amount of protein, carbohydrates, fats, vitamins and minerals, and supplement essential nutrients such as folic acid, which is beneficial to embryonic development. At the same time, you should also eat less spicy and greasy food, quit smoking and drinking, to avoid harm to the embryo. You should also pay attention to weight control during pregnancy. Excessive obesity or weight loss will affect the development and health of the embryo. At the same time, it is also recommended that pregnant women appropriately increase their intake of carbohydrates and other foods according to their personal physique and nutritional needs, broaden their diet types, and eat more fresh vegetables, fruits and fiber-rich foods.