It is not possible to lose weight deliberately during pregnancy. The diet of pregnant women during pregnancy needs to meet the needs of the pregnant woman herself, but also needs to provide various nutrients needed for the growth and development of the baby. Excessive dieting and weight loss during pregnancy can easily lead to insufficient intake of various nutrients and affect the physical development, intellectual development and vision development of the baby. If women who are overweight or obese need to control their diet properly during pregnancy, but not overly restrained, the common diet is as follows: 1. Try to reduce fried and deep-fried foods, which have a high calorie content, but lack of vitamins and minerals nutrients, over-eating will lead to excessive weight gain during pregnancy, which is not conducive to baby development; 2. Try not to eat pastries and other sweet foods. These foods provide a lot of calories, but provide little content of other micronutrients; 3, eat more coarse grains, fresh vegetables and fruits, a variety of potato foods, fish and meat.