Hematospermia in men can be caused by physiological factors, but also by inflammation, duct obstruction, tumors, etc. It is recommended to consult a doctor in time. 1. Physiological factors: such as sexual indulgence, excessive duration of sexual intercourse, long-term sexual abstinence, etc., the patient is not accompanied by other symptoms, and can be relieved on their own. 2. Inflammation: such as prostatitis, seminal vesiculitis, urinary tract tuberculosis, syphilis, etc., the mechanism of blood semen is inflammatory reaction induced seminal vesicle mucosa congestion, edema, patients may also appear fever, urinary frequency, urinary urgency, urinary pain and other symptoms. 3. Ductal obstruction: such as prostate cysts, seminal vesicle dilatation, ejaculatory duct cysts, urethral stenosis, etc., the patient may also be accompanied by urinary difficulties, pain and other uncomfortable symptoms. 4. Tumor: such as prostate cancer, seminal vesicle cancer, etc., patients may also be accompanied by difficulty in defecation, fatigue, emaciation, anemia, edema and other discomforts. When male patients have symptoms of hematospermia for many times, they should seek medical treatment in time, and improve relevant examinations under doctors’ guidance, such as urine routine, semen routine, prostate fluid examination, ultrasound, etc., so as to find out the cause of the disease and carry out corresponding treatment, and avoid making blind judgment on their own, so as to avoid delaying the condition.