The invention discloses a urodynamic detection analysis method. The method comprises the following steps of: establishing an elastic element model of a bladder; establishing a urethral model; keeping an anterior urethra vertical to the direction of gravity, recording and measuring micturition data and calculating micturition parameters; calculating the contraction length of an elastic element, further calculating the contraction speed, the contraction acceleration and the maximal contraction acceleration of the elastic element; and calculating the maximal cross-sectional area of the urethral model. The method can completely overcome the shortages of the pain of a sufferer and the possibility of infection caused by a conventional invasive urodynamic detection method; an overall analysis process can be performed with the help of a computer; results of the overall analysis process are clear and are convenient for clinical memory and use; a device made by using the method has the characteristics of simple structure and convenient maintenance; and therefore, the medical cost is reduced.