Weight loss is generally not allowed during pregnancy, which is not only detrimental to health, but may also affect the growth and development of the fetus. During pregnancy, pregnant women should eat a balanced diet, do not diet excessively to lose weight, you can eat more fresh fruits and vegetables, such food contains vitamins, proteins, minerals and other components, is conducive to promoting the growth and development of the fetus. Especially in the first trimester of pregnancy, should be combined with their own situation, daily appropriate supplement folic acid content, so as to prevent the fetus from neural tube malformation. However, it should be noted that during pregnancy, try to eat as little as possible of high oil, cold, spicy and stimulating foods, such as pate, ice cream, chili peppers and so on. If physically possible, appropriate light exercise, such as yoga, slow walking, etc., are conducive to maintaining a healthy weight. Pregnant women not only need to avoid excessive dieting during pregnancy, but also need to avoid excessive obesity. Keep a positive and optimistic mindset and avoid negative emotions.