The normal shape of testis in adult male is generally oval, generally the weight of the left testis is 10.5-14g, the right testis weighs 10-15g. testicular volume less than 11ml suggests testicular dysfunction, testicular volume has obvious increase in the most common may be the testicular inflammation, testicular tumors, testicular trauma in the acute edema stage, testicular obvious shrinkage may be there is a testicular trauma, spermatic cord torsion or Testicular torsion for more than 6 hours without giving prompt treatment. Cutting off the spermatic artery after varicocele surgery may lead to the blood supply of the testicle being impaired leading to atrophy of the testicle.