Semen as the carrier of reproductive cells, his good or bad is directly related to the quality of sperm during the period, in other words it is also directly related to whether or not you can get pregnant and give birth to a healthy baby, the man is out in the wind and rain without fear of hardship, not afraid of frustration, but whether or not you have a healthy semen, it is necessary to have the ability to look down and carefully discern. Semen examination is an important test to evaluate male fertility and reflect the status of sperm production in the testes and the function of the accessory gonads. In life, men can perform self-checks on semen through some simple methods as follows. Semen volume: 2-6 ml, the lower limit of the fifth edition is 1.5 ml. Semen volume refers to the quantity of semen discharged in each ejaculation, and under normal circumstances, the volume of semen in one ejaculation is 2-6 ml. The amount of semen volume is related to the length of abstinence; a longer period of abstinence results in more semen volume and vice versa. If the volume of semen is too low for a long time, it may cause difficulty in conception. Excessive semen volume reduces sperm density. If you use a condom during sex, you can check the amount of semen in it after each session, and be aware of any sudden increase or decrease in semen volume. Color: Milky or grayish. Freshly ejaculated semen is jelly-like, off-white or grayish-yellow, those who have not ejaculated for a long time ejaculate semen of a darker color, and semen of the elderly is mostly dark yellow. If the semen is brownish-yellow or with blood, it may be related to inflammation of the urinary tract, injury to the reproductive tract and other diseases, such as prostatitis, seminal vesicle prostate cancer. If the semen is transparent and dilute, it suggests that the sperm density is low. Odor: light fishy smell. Normal semen has a special light fishy smell, which is produced by the oxidation of polyamines in the prostate fluid. The longer the period of abstinence, the greater the odor. If there is a noticeable foul odor, consider whether there is an infection. Changes: the jelly becomes thinner. At room temperature, semen ejaculated outside the body immediately solidifies into a jelly-like consistency and then enters a process of liquefaction, gradually becoming thinner. This process is mostly completed within 15 minutes. If it takes more than 30 minutes, the semen is not liquefied or incompletely liquefied, which is mostly seen in patients with prostate and seminal vesicle diseases. Armed with this knowledge, it is recommended that after sex, couples stop by and observe the semen to see if it meets the above criteria. If you are worried that there is a problem, it is best to abstain from sex for 3-5 days and go to the hospital for a routine semen examination. There are very many data listed in the clinical semen analysis report form, some of which are worth paying attention to. Sperm density: 15 million per milliliter is considered normal. 39×106 (33-46) per ejaculate, sperm density refers to the number of sperm per unit volume. Sperm density of less than 15 million per milliliter is considered oligospermia, which reduces the chances of sperm entering the uterine cavity and the fallopian tubes, thus leading to a lower ability to conceive; more than 200 million per milliliter is considered polyspermia, which also affects the ability of sperm to conceive. Sperm activity: Sperm according to the vitality of the good and poor to be divided into four categories, a level that sperm activity is very good, fast straight forward movement; b level that sperm activity is very good, straight forward movement; c level that sperm activity is general, only forward curve movement; d level that sperm activity ability is poor, only in situ wriggling. Sperm with fast forward motion should have a grade a greater than 25%. Sperm with fast forward and slightly slower forward movement should have a b-grade (a-grade + b-grade) greater than 50%, then if this basic requirement is not met, it will affect normal pregnancy and childbirth. Sperm viability and malformation rate: more than 58% and less than 96% respectively. Under normal circumstances, sperm viability above 58% and deformity rate below 96% is a better indicator. Semen pH: stable at ≥7.2. Most semen PH values are stable at around ≥7.2. Finally, it should be reminded that the semen report is not a “final word”, and specific problems need to be diagnosed and treated by a doctor.