The normal range of semen volume for a male ejaculation is 2-6ml. If the amount of semen collected is found to be low, pay attention to whether the collection method is correct and identify whether retrograde ejaculation is present. If the semen is collected correctly, a semen volume of less than 0.5mL is considered azoospermia; 0.5 to 2mL is considered oligospermia; and more than 6mL is considered polysemenorrhea. Oligospermia is usually caused by human factors such as living too often, and polysemenorrhea is commonly caused by hyperfunction of the accessory sex glands. Sperm that are low in number are called oligospermia and can affect a man’s fertility. Men who want to evaluate their fertility can have a routine semen test to observe the density, vitality, and morphology rate of sperm. If you find that your semen volume is not in the normal range, you should go to a regular hospital for timely consultation and treatment.