Strengthening nutrition: Both parties should strengthen the intake of high-quality protein (fish, beef, mutton, etc.), trace elements (shellfish, nuts, etc.) and vitamins. In the first six months of pregnancy should maintain a weight commensurate with height, do not diet, partiality, picky eating. Eat less and no stimulating foods, such as fried foods and excessively spicy foods. Establish good dietary and living habits and avoid overworking or staying up late. Avoid contact with pollution, such as paint, radiation and noise. Peel fruits and eat them after eating. Avoid using lead and colored enamel products. Choose fresh and natural food and try to maintain a balanced nutrition. Avoid foods containing food additives, colorings and preservatives. Drink plain water, avoid coffee and beverages, and both parties should stop smoking and drinking alcohol.