Three testes, or polyorchidism, is abnormal. The onset of three testes is rare, and the third testis is most often located on the left side. The etiology of its occurrence may be due to the lateral division of the genital ridge by the peritoneal ligament at 4 to 6 weeks of embryonic life. The majority of patients with polyorchidism are asymptomatic and are found incidentally, fertility is normal and sometimes an inguinal or scrotal mass is seen. Polyorchidism can be clearly diagnosed by ultrasound and magnetic resonance, and the treatment varies from person to person. Asymptomatic people do not need treatment, but if there is a torsion of the tip or a tumor occurs, it can cause pain in the lower abdomen or scrotum, and it is recommended to remove it as soon as possible. To summarize, if there is any discomfort, please consult a doctor in time.