With the improvement of agricultural mechanization in China, the development of agricultural machinery suitable for hilly and mountainous regions has been paid more and more attention；However, due to poor hilly and mountainous regions operating environment, when agricultural vehicles are in the walk, the processes of roll angle and pitch angle have a great change, affecting vehicle stability. The existing agricultural vehicle leveling is mainly through mechanical, electronic, hydraulic and other control technology to achieve, mostly when the body tilts, according to the degree of tilt of the vehicle to calculate the amount of adjustment and leveling, this method is characterized by complex control and high cost. Aiming at the problems, an adaptive leveling method was proposed. And an adaptive leveling suspension and an adaptive leveling chassis with the suspension were designed by using this method. Three-dimensional model was established by using 3D modeling software, and the model was introduced into dynamic analysis software ADAMS for simulation analysis. By analyzing the simulation process, it was possible that the sum of the roll angle and pitch angle of the adaptive leveling chassis can be reduced by about 60% when walking on amplitude and wavelength-specific waveform ground which referenced to a certain operating environment. The test of sample machine was carried out, and the results showed the feasibility of the adaptive leveling method and the correctness of the simulation analysis, that was, the adaptive leveling of the chassis can reduce the sum of roll angle and pitch angle when the chassis was running and can be realized and met the requirements of the agricultural chassis in the hilly area.