The sperm vitality of a 55-year-old man is usually related to the patient’s nutritional factors and other diseases. 1. Nutritional factors: men’s sperm vitality will gradually weaken with age, age is an important factor affecting men’s sperm vitality. The strongest age for a man’s sperm vitality is 25 to 35 years old, and at this stage a man’s semen quality is higher and his sperm vitality is stronger. If a 55-year-old man is in good health and has adequate nutritional supplements, his sperm vitality is usually strong. If his nutritional supply is poor or his health is weak, his sperm vitality will usually be affected. 2. Whether suffering from diseases: 55-year-old man if older or the existence of reproductive system diseases such as prostatitis, epididymitis, the sperm in the environment of the decline in pH, nutritional deficiencies and space is not conducive to the survival of sperm; varicose veins, due to the high temperature, the lack of oxygen, resulting in sperm survival is affected, and so on. Therefore, the above diseases can lead to weakened sperm vitality in 55-year-old men. To improve the sperm vitality, we should pay attention to the light diet, avoid eating spicy and greasy food, exercise more to improve the function of sperm production, such as the need to clarify the sperm vitality can be to the hospital for relevant examination.