After disinfection in front of the scrotum, the scrotum and the inner sides of both thighs, the operator squeezed the dog's testicles into the bottom of the scrotum with his left hand, so that they were located on both sides of the scrotum seam respectively and made the scrotum skin tense. Then, the skin and the common tunica were cut on both sides of the scrotum seam parallel to the scrotum seam, and the testicles were squeezed out. With the right hand, push the skin and the common tunica vaginalis upward to fully expose the thinnest part of the spermatic cord, and clamp it with hemostatic forceps, near the groin.