In view of the insufficient theoretical basis for the design of special rotary tiller machinery for hilly and mountainous areas, the lack of basic data on sloping land conditions, and the common technical bottlenecks such as significant fluctuations in tillage depth, intense vibration, and excessive energy consumption when operating in complex terrain, a special rotary tiller test platform suitable for sloping land conditions in hilly and mountainous areas was designed, which can realize functions such as slope angle simulation and slope profiling operation. The test platform was mainly composed of the rotary tillage driving guidance device, rotary tillage driving device, rotary tillage lifting adjustment device, rotary tillage angle simulation device, rotary tillage operation device and slope angle simulation device, etc. It integrated functions such as slope angle simulation, rotary tillage angle coordination, rotary tillage operation and tillage depth adjustment. The performance test of the test platform was carried out. The results showed that the rotary tillage inclination angle simulation device can achieve precise coordination with the target slope (soil trough inclination angle) within the range of 0°to 20°. The electric sports car of the rotary tillage driving device can achieve a forward driving speed of 0~3.64km/h. The rotary tillage knife shaft can achieve a rotary tillage speed of 0~335r/min. The rotary tillage lifting adjustment device can achieve a stable and stepless adjustment of the tillage depth from 0~30cm. This test platform met the multi-factor and multi-level test requirements of rotary tillage on hilly and mountainous slopes. The design goals were achieved, including random simulation of the slope angle, automatic profiling of the rotary tillage knife shaft, precise and controllable tillage depth, and stepless adjustment of the forward speed. This research can provide platform support for the improvement of the theory of rotary tillage on sloping land and the innovative design of special rotary tillage tools, and offer methodological references for the development of test platforms for other operation equipment in hilly and mountainous areas.