The mathematical vibration model of travel stabilizing system of wheel loader which was added to reduce spillage of material was built firstly. The equivalent stiffness and damping of travel stabilizing system were deduced, and influence factor was analyzed. In order to solver the characteristic parameter of the mathematical vibration model, the simulation method based on Pro/E and ADAMS was adopted. The result indicates selecting the appropriate parameter of accumulator is the important factor of the effect of travel stabilizing system. This paper is basic of further research on travel stabilizing system.