When doing testicular ultrasound examination, we should pay attention to the following matters: firstly, let the patient lie flat on the examination bed and expose the perineum, then apply coupling agent on the surface of the scrotum and use the superficial probe to conduct the investigation. The probe should gently touch the surface of the scrotum during the examination. Do not press hard because the testes and epididymis will be deformed and displaced after pressing the probe hard, which will affect the observation. When observing the testes and epididymis, it is important to see whether the envelope of the testes and epididymis is smooth and whether the parenchymal echogenicity is uniform, and to observe whether there are any occupying lesions inside. If necessary, color Doppler should be used to detect the internal blood flow of the testes. Ultrasound examination of the testes and epididymis is painless, non-invasive, radiation-free and easy to perform.