There are several reasons why men experience pain after ejaculation: first, men suffering from seminal vesiculitis or seminal vesiculitis, pain accompanied by bloody material in the semen appear hematosperm, daily life in the perineal area, urethra can be accompanied by discomfort or swelling pain phenomenon. The second consideration is that the male urethra is infected causing pain after ejaculation, such as urethral mucosa ulceration, acute urethritis need to be confirmed through urethroscopy or routine urine examination. Thirdly, the presence of stones or tumors in the seminal vesicles of men is considered to cause damage to the seminal vesicles under the stimulation of stones or tumors. As a result, there is pain during ejaculation, and the pain is accompanied by bloody semen, which needs to be further diagnosed through seminal vesicle ultrasound or nuclear magnetic examination. It is recommended that men do a good job in their daily life in dealing with the hygiene of their genital organs, keeping the local area clean and clean, and seek medical attention promptly when there is pain and discomfort after ejaculation to avoid delaying the condition and treatment.