Zhang Jiahua, male, chief physician, professor, tutor for master students, 1958, from Xingwen, Sichuan, has been engaged in urology for 25 years, with extremely rich clinical experience and two original breakthroughs. Has more than 20 national invention patents and utility model patents. 1. It is the first time in the world to put forward a new viewpoint of urethral urine control: under the premise of normal extraurethral factors, the length and function of functional urethra (elasticity, pressure and stopping function of mucosal pad) are the two most important factors of urethral urine control. Five new original operations have been designed, three of which have been implemented.