Men should eat more high protein and zinc-containing foods during the preparation period to help prepare for pregnancy. 1. High-protein foods: Eggs, beef, chicken, fish, shrimp and other foods are rich in protein. Eating more high-protein foods appropriately will help to improve the quality of the body, which can enhance the quantity and quality of male sperm and keep the sperm alive. 2. Foods containing zinc: zinc is a trace element that can maintain male reproductive function, lack of zinc will lead to a decline in the quantity and quality of male sperm, reduce sperm activity, poor semen liquefaction, and even infertility and other consequences. Therefore, men should eat more zinc-containing foods, such as walnuts, almonds, peanuts, millet, etc. during the preparation period. In addition, men should eat less spicy and stimulating food during the preparation period, and should quit smoking and drinking, so as not to adversely affect the sperm.