Dr. ZHANG Zhigen became a urological surgeon in 1977 and was promoted to a master's supervisor in 1993. In 2008, he became the Director of the Department of Urology at SRRSH. He participated in the compilation of more than 300,000 words of books on the diagnosis and treatment of urinary tumors. Dr. Zhang specializes in the diagnosis and treatment of urinary tumors and urinary calculi, especially muti-modality therapy for urinary calculi. He has rich clinical experience in radical surgery for complex renal cell carcinoma, bladder cancer, and prostate cancer. He made efforts to carry out new surgical techniques for renal cell carcinoma and adrenal tumors early in Zhejiang province.