During preparation for pregnancy, diet is crucial to the reproductive health of both partners. Men should reduce their intake of alcohol and tobacco, avoid fried and high-sugar foods, and foods containing artificial additives; women should increase their intake of foods rich in folic acid and iron, and pay attention to the diversity and balance of their diet. Both parties should ensure adequate protein and vitamin intake, as well as avoid uncooked food and seafood to reduce the risk of food poisoning. Create the best physical conditions for pregnancy through a reasonable diet.