If there is a hard lump on the testicle for a longer period of time, it is also necessary to go to the hospital for relevant examinations to clarify the cause: first, if there has been testicular inflammation, there may be localized fibroproliferative nodules after the inflammation has healed, manifesting as hard nodules, painless, non-itchy, and without any conscious symptoms, and ultrasound examination is needed to further confirm the diagnosis; second, epididymal nodules, often seen after secondary epididymitis Secondly, epididymal nodules, often seen after secondary epididymitis or epididymal tuberculosis, can show local hard nodules with close adhesion to the testis, sometimes it is not easy to distinguish, and ultrasound examination of the scrotum is needed to further confirm the diagnosis; thirdly, trauma to the testis can also appear as nodules with local scar growth after the trauma heals. Usually there is a clear history of trauma, and if a local hard mass appears after trauma, it is related to the scar formed by trauma and does not require any special treatment; fourth, tumor of the testis, but the mass can gradually increase in size or change to diffuse enlargement over time. Testicular tumor indexology tests, as well as CT examination of the testes are needed to perform the necessary exclusion.