Testicular cyst 4×5cm is the diagnosis of the lesion by ultrasound and other imaging examinations, and the lesion is relatively large, which requires standardized treatment under the guidance of clinicians. Testicular cysts mainly occur in the testis or epididymis, which contains a large number of spermatozoa, the corresponding lesions are mainly related to congenital development and acquired inflammation, because of poor local patency, resulting in the accumulation of semen caused by cystic foci, through the ultrasound examination of liquid echogenicity, with a volume of 4 × 5cm, the diagnosis is made, and need to be combined with the clinical symptoms to do further treatment. At present, the cyst is relatively large in size, and in most cases, it will be accompanied by peripheral compression and will cause painful and uncomfortable symptoms, which will require surgical resection of the testicular cyst. Testicular cysts cause obvious scrotal swelling, pain and discomfort, you need to consult a doctor in time to confirm the cause of the disease, under the guidance of the clinician to carry out standardized treatment, to avoid delaying the condition.