The common clinical causes of painful ejaculation include prostatitis, seminal vesiculitis, and urinary tract infections. 1. Prostatitis: This condition refers to a group of diseases including acute and chronic inflammation of various prostate glands, the causes of which include pathogen infection, irregular sex life, sedentary lifestyle, alcoholism, etc. Clinical manifestations include pelvic pain or discomfort, urinary abnormalities and sexual dysfunction. 2. Seminal vesiculitis: this disease usually occurs at the same time with prostatitis, mostly caused by other parts of the retrograde infection, clinical manifestations of ejaculatory pain, lower abdominal pain, urinary frequency, urinary urgency and so on. 3. urinary tract infection: the situation refers to a pathogenic microorganisms caused by the urinary tract infectious diseases, mainly bacterial infection, clinical manifestations of urinary frequency, urinary urgency, urinary pain and ejaculation pain. If the pain symptoms persist, it is recommended to go to the hospital to improve the relevant examination in order to target treatment.