Anal ultrasound examination of the prostate is mainly through the anus into the ultrasound probe, through the anterior wall of the rectum to the prostate examination, compared with the traditional through the abdomen of the prostate ultrasound examination, to be more clear and detailed. The most common clinical ultrasound examination of the prostate is the abdominal examination, which needs to hold urine before the examination, and the examination results will be affected by the patient’s abdominal fat tissue, intestinal gas accumulation and other factors. Because the back of the prostate is adjacent to the rectum, there are fewer factors affecting the examination, so the anal ultrasound examination of the prostate is relatively clearer and more accurate. Through anal ultrasound, the size and shape of the prostate, its relationship with the urethra, and the presence of lumps and calcifications can be examined. It is recommended to combine the patient’s symptoms and signs with the prostate ultrasound examination to further improve the examination, such as prostate fluid, puncture biopsy, etc., in order to clarify the condition, and then give the appropriate treatment by professional physicians.