The main components of male sperm include protein, minerals, sugar and other substances, among which protein is the most abundant, and male semen belongs to a protein-rich substance. Semen also includes substances such as acrosomal enzymes, hyaluronidase and alkaline phosphatase, which have a good protective effect on sperm and are also proteins that can effectively protect sperm from damage after semen enters the vagina. Acrosomal enzyme and hyaluronidase can help the union of sperm and egg. This protein is limited to the birth canal, and semen will be broken down soon once it leaves the birth canal. Usually men can eat more foods rich in protein, zinc and vitamin B2, such as tomatoes, pumpkin seeds and leeks, which can effectively improve the quality of semen.