There are many reasons why there is blood in the urine after extracting prostate fluid, such as caused by prostatitis, which can be relieved by the use of medication (such as Prostacare tablets, etc.), or caused by prostate cancer, which can be relieved by surgical removal of the lesion or orchiectomy. It needs to be analyzed according to the specific situation. 1. Prostatitis: the capillaries of prostate tissue may be dilated and congested. During the extraction of prostate fluid, the doctor needs to massage the prostate, during which the prostate is stimulated, which may cause the capillaries of prostate tissue to rupture and bleed, and the blood will be discharged with the urine after the extraction of prostate fluid, which is manifested as blood in the urine. 2. Prostate cancer: Cancer tissues may invade the blood vessels of the prostate, and when the doctor extracts prostate fluid, the prostate is stimulated, which may cause the blood vessels infiltrated by cancer cells to rupture and bleed, and the blood will be discharged with the urine, which is manifested as blood in the urine. Prostate cancer can be treated by surgical removal of the lesion, and also by orchiectomy, which reduces the secretion of androgen. Blood in urine after extraction of prostate fluid may also be caused by other urinary system diseases, such as stones, tumors, infections, etc. It is recommended that the patient go to the hospital for consultation and targeted treatment with the help of the doctor.