Urology is the study of the urological system and male reproductive system, which includes diseases of the adrenal glands. 2. tumors of the urinary system, such as kidney tumors, bladder tumors, ureteral tumors, prostate tumors and testicular tumors, etc. 3. stones of the urinary system, such as kidney stones, ureteral stones, bladder stones, urethral stones, etc. 4. inflammatory diseases of the urinary system, such as urinary tract infections, epididymitis, orchitis, etc. 5, 4. inflammatory diseases of the urinary system, such as urinary tract infection, epididymitis, orchitis, etc. 5. diseases of the prostate, such as chronic prostatitis, prostatic hyperplasia. 6. male diseases, such as premature ejaculation, erectile dysfunction.