According to the problems of few test projects and test platforms in the existing rear suspension testing system, a tractive rear suspension multi-position rear suspension field experiment platform was designed on the basis of the relative design experience. Based on the statics principles, the suspension performance curves of hydraulic pressure three points were drawn. The steering operational, driving linearity and power output shaft with the highest speed under tractor, experiment platform, experiment suspending 2BDM-12 wheat specific row no-till dill and experiment suspending 2BMSF-12/6 no-till dill were tested in the field. The results showed that the steering operational, driving linearity and power output shaft with the highest speed had some changes but within allowed limits under four conditions. Therefore field experiment platform met the requirements of the rear suspension equipment tests in the field. 