Sperm less, that is, oligospermia, diet need to pay attention to the following points: 1, intake of adequate amount of protein-rich food, such as poultry eggs, soy products, lean meat; 2, intake of adequate amount of arginine-rich food, such as yam, octopus, hoof tendon, konjac, etc.; 3, supplementing a variety of vitamins, which can increase gonadal function and sperm vitality. Vitamins are widely available in animal liver, fresh vegetables, fruits, etc., and can be eaten appropriately; 4, moderate consumption of sex hormone-rich foods can promote the division of spermatogonia, which is beneficial to spermatogenesis.