A young male patient had a hernia that was discovered as a child but never operated on. He only came to the hospital later when he developed pain that affected his work. By this time, the doctor found that his testicles had significantly atrophied. Although the surgery was successful, the testicular atrophy could no longer be recovered. Although inguinal hernia is a minor disease, because the internal organs in the abdominal cavity keep entering the scrotum, especially some hernias fall out of the large omentum, which does not easily return to the abdominal cavity and compress the blood vessels of the testicles in the scrotum for a long time, causing testicular ischemia, which in time causes testicular atrophy. Testicular atrophy is an important cause of infertility. Therefore, the discovery of an inguinal hernia requires prompt surgical treatment to avoid such bad consequences.