The signs of male infertility are mainly manifested in abnormal semen and impotence symptoms of the genitals. Infertility is usually accompanied by non-liquefaction of semen, too little semen, cloudy or even no semen. Non-liquefaction of semen means that semen becomes abnormally jelly-like outside the body after ejaculation and becomes so inactive that fertilization is impossible, which is the most common symptom of male infertility, and cloudy semen. A normal semen contains 20 million sperm in one milliliter, and a low semen production in men can also lead to infertility. In addition to abnormal sperm, there are also pathologies of the genitals that can lead to infertility, such as impotence, inability to have a normal erection or erection that is not firm enough or cannot be erected for a long time, and inability to have sex, which most directly leads to infertility in men.