The testes are generally positioned approximately symmetrically and are approximately equal in size, but not absolutely symmetrical and equal. If there is an obvious abnormal position, one high and one low, it is recommended to first self-examine for swelling and pain of the testicles, and for an increase in testicular volume. Possible causes: 1. Testicular syringomyelia, common in children due to congenital factors and in adults due to local effusion after trauma and infection, etc. At this time, it is obvious that the testicles are enlarged and the testicles on the enlarged side are in a lower position, while the testicles on the normal side are in a relatively high position. The testicle may be painful, enlarged and hardened when touched by hand, and it is recommended to perform ultrasound examination to exclude the presence of syringomyelia. 2. The testicular position on the inflamed side may be lowered when the testicle is inflamed. The normal side of the testicle is relatively high, accompanied by obvious tenderness of the testicle. The testicle is hardened and enlarged when touched by hand, and sometimes the patient cannot walk because of local pain. 3. But generally there is no obvious pain, when touched by hand, the soft texture of the varicose blood vessels can be touched in the scrotum, also need to perform scrotal ultrasound to further identify the presence of varicose veins.