Urodynamic testing, which is performed at a municipal tertiary care hospital, costs about$400. It includes bladder pressure and flow rate testing of the urethra for manometry and urinary flow rate testing. During the examination, a urinary catheter is left in the urethra and a manometry tube is placed into the rectum, and then a urodynamic test is connected. After emptying the urine from the bladder, saline is slowly injected into the bladder, and then the change in pressure in the bladder and the change in abdominal pressure are analyzed to assess the force of contraction of the bladder forcing muscles, and urethral manometry can also be performed to understand the closure pressure and leakage point pressure of the urethra, etc. It has clear significance for the judgment of functional diseases of the urinary system, such as urinary incontinence diseases, stress urinary incontinence, etc., and urinary obstruction diseases; it also has very important significance for the judgment of the force of contraction of the forced urinary muscle for prostatic hyperplasia.