The seminal vesicles are a pair of small glands located above the prostate. They are one on each side. Its seminal fluid secreted by the seminal vesicles accounts for 65% of the semen. Its seminal fluid can liquefy the semen, and its seminal fluid is also rich in fruit acid. It is an excellent nutrient for sperm movement. Since both the prostate and the seminal vesicle are open to the posterior urethra, the two are in close proximity, so seminal vesiculitis often occurs simultaneously with prostatitis. Prostatitis can flow back into the seminal vesicle through the expelled inflammatory prostatic fluid, resulting in seminal vesiculitis. The inflammation of the seminal vesicle is also easy to invade the prostate and affect the discharge of prostatic fluid. Seminal vesiculitis is a relatively common disease in men and young adults. It is caused by Escherichia coli, Klebsiella aeruginosa, Proteus and Pseudomonas. When the organ is adjacent seminal vesicle: such as the prostate, the posterior urethra, the colon, etc., or in any case, the prostate and the seminal vesicle are congested, the bacteria will take the opportunity to invade the seminal vesicle and induce seminal vesicle. Clinically, seminal vesiculitis is divided into two categories. Acute seminal vesiculitis and chronic seminal vesiculitis. Seminal vesiculitis often complicated by prostatitis, urethritis. In acute state, patients may have obvious urinary frequency, urgency, dysuria, and sometimes dysuria. In Chronic state, patients have urinary frequency, urgency, and urination discomfort, such as burning sensation. Acute state of patients have abdominal pain, and involves the perineum and bilateral groin. In chronic cases, there may be pain in the suprapubic area, accompanied by genital discomfort. Pain is significantly exacerbated during ejaculation. There may be fever, cold, and chills. This is a systemic symptom seen in acute seminal vesiculitis. Hematuria is also one of the manifestations of acute seminal vesiculitis. The ejaculation pain, low libido, nocturnal emission, reduced sperm, and premature ejaculation are seen in chronic seminal vesiculitis.