In order to research the influence of the rack tooth forms and working conditions on the mechanical property of selfpropelled monorail mountain orchard transporter，the dynamic models of the transmission system including the driving wheel and racks were established based on the dynamic theory and the Hertz impactcontact theory.Based on ADAMS/View simulation software,the relation of the tooth forms and the torque of the driving wheel which was generated when the driving wheel was engaged with the racks was analyzed and simulated.The orthogonal experiment was carried out using tooth forms,rail gradients and angular velocity as experiment factors and the average torque as assessment index.Range analysis and variance analysis was used to determine the importance index for the torque.The results showed that the order of the primary and secondary impact on the mechanical performance of the transporter is rack tooth profile>track grade>drive wheel speed.Under the same conditions,the sprocket rack has the best performance.Under the condition of the angular velocity of the drive wheel was +88.08 rad/s,the rail gradients were +0°,+6°,+12°,the average torque was decreased by 33.82%，33.45%，18.36%,respectively when the driving wheel was engaged with chain wheel tooth form rack than arc tooth form rack.The correctness of the model simulation analysis is verified,which will provide a reference for the structural optimization design of selfpropelled monorail mountain orchard transporter track.