A computer assistant emulational analysis method for saloon car, the steps are: (1) choose the three-dimensional parameter module of the hanger or the entire car from the three-dimensional parameter module-base by the software interface of the ADMAS/View; (2) choose the proper tyre file and road file from the tyre file-base and the road file-base; (3) rework the design parameter; (4) make the emulational analysis in condition of emulational examination; (5) output emulational analysis result; (6) confirm the optimum design aim, optimize design the design variable. The beneficial effect of the invention is: utilize the computer technology, the theory of multi-dynamics and the examination standard of saloon car synthetically, to achieve the emulational analysis of the car capability in the dummy condition; utilize parameter modeling technology to reuse of the emulational analysis module; use the optimize design theory to achieve the optimize design of the car design parameter.