Abstract: The load analysis of bulldozer includes the externalload, and each component load of work equipment under the external load.The structure of bulldozer's six-oriented shovel is simplified, and theload analysis on its model is carried out.At the same time, the oil jar force, the reaction load ofpushing peak frame and the reaction load of each joint point are analyzed. The work not only provides a basis for framework analysis of work device, but also for rigidity tolerance analysis.