The procedure of transrectal prostate ultrasonography includes preparation for prostate examination and prostate examination, as follows: 1. Preparation before prostate examination: Since the examination needs to enter into the rectum, the feces in the rectum and colon can be discharged by means of cleansing enema before the examination, so as to facilitate a clearer display of the prostate gland. 2. Prostate examination: During the examination, the patient should be placed in the left lateral position or the lithotomy position. Use high-frequency microprobe, put on a condom and slowly into the rectum, the angle of the probe tilt should be consistent with the direction of the rectum, and at the same time adjust the probe multi-directional close to the surface of the prostate gland inspection. Micro lesions of the prostate can be observed, and the blood flow of the prostate can be observed by color Doppler imaging. If transrectal prostate ultrasonography is needed, it is recommended to go to the hospital for consultation, so that the specific procedure can be clarified and relevant treatment can be given under the guidance of the doctor.