The seminal vesicles, also known as the seminal vesicle glands, are one of the male accessory sex glands. Common clinical diseases of the seminal vesicles include seminal vesicle deficiency, seminal vesicle cysts and seminal vesiculitis. 1. Spermatozoa deficiency: the main reason is congenital growth and development abnormality, mostly accompanied by the absence of vas deferens, which can lead to infertility. 2. Vesiculocystic cysts: benign lesions of the seminal vesicles, related to heredity, infection and trauma, which can lead to symptoms such as hematospermia, post-ejaculatory pain and hematuria, and some patients may be infertile. 3. Seminal vesiculitis: most common in bacteria and other pathogenic microorganisms, through the urethra of the retrograde infection, can lead to the patient to appear hematospermia, perineal pain, and urinary tract irritation symptoms such as urinary frequency, urinary urgency, urinary pain and so on. It is recommended that patients with seminal vesicle disease go to a regular hospital to improve the examination, in order to clarify the condition, and then under the guidance of a professional physician for treatment.