The diet of pregnant women during pregnancy should not only meet their own needs, but also provide various nutrients needed for the baby's growth and development. Excessive dieting and weight loss during pregnancy will easily lead to insufficient intake of various nutrients, which will affect the baby's physical development, intellectual development and vision development. If overweight or obese women are pregnant, they need to control their diet properly, but not excessively. 1, try to reduce fried foods, which are high in calories but lack vitamins and minerals. Overeating during pregnancy will lead to excessive weight gain, but it is not conducive to the baby's development; 2, try not to eat cakes and other sweets, these foods provide a lot of calories, but provide few other micronutrients; 3, eat more coarse grains, fresh vegetables and fruits, all kinds of potato food, fish and so on. You can only control weight gain during pregnancy, and you can't lose weight excessively. Controlling weight gain during pregnancy is equivalent to losing weight. How can we effectively control weight gain during pregnancy? 1, it is best for pregnant women to weigh themselves once a day. Of course, it is best to weigh yourself on an empty stomach, which can warn pregnant women to control their diet. 2, develop good eating habits, don't be greedy. Don't eat foods high in salt, fat and sugar. Try not to eat all kinds of high-calorie bagged food, and don't eat sweets such as chocolate and candy. 4. Take part in outdoor activities as much as possible during pregnancy to promote calorie consumption. Don't stay alone in the room for a long time, and avoid overeating when you are bored.