The first trimester of pregnancy is the period of rapid development of fetal nerves and blood vessels, and it is also the period when the early pregnancy reaction is most serious, and it is also the critical period for the differentiation of fertilized eggs and the formation of fetal organs. At this time, you need to pay attention to dietary regulation, meals should be simple, easy to digest and absorb, and try to choose foods rich in vitamins and proteins. During early pregnancy, meals should be light and tasty, avoid greasy food, and try to eat less or no spicy and stimulating food, such as chili, pepper, ginger, garlic, etc. When pregnant women do not eat much, they should consume vegetables with high water content and low calorie content, and should adopt a small number of meals, with 5-6 meals per day being appropriate, attention should also be paid to dry and thin meals, and soup and water should be given between meals to prevent stomach acid from being diluted. Attention should be paid to a balanced diet, more high-quality protein, including eggs, milk, chicken, fish, lean meat, etc., more fresh vegetables and fruits, including oranges, grapefruit, oranges, bananas, etc., and attention to the intake of carbohydrates. Also pay attention to folic acid supplementation and it should be continued until the end of the third month. Smoking and alcohol abuse should be prohibited, avoid staying up late, and you can participate in outdoor activities, get more sunshine and exercise properly.