Prostate cancer mostly occurs in middle-aged and elderly male patients and is a common malignant tumor of the male genital tract. In the early stage, most patients have no clinical symptoms. It is often detected during rectal examinations or further examination of elevated serum prostate-specific antigen values, or in surgical specimens of prostate enlargement. Transrectal ultrasound and prostate-specific antigen assay are the basic methods for clinical diagnosis of prostate cancer. Rectal examination can reveal prostate nodules with a firm texture. Currently, a high level of PSA is an indication for prostate biopsy. The diagnosis of prostate cancer relies on systematic puncture biopsy of the prostate under rectal ultrasound guidance and is based on the presence or absence of cancer in the tissue obtained. IVU can detect advanced prostate cancer infiltrating the bladder and causing hydronephrosis due to ureteral compression.