Abstract: In view of the complex and diverse terrain of orchard planting areas, there are some problems such as low production efficiency, low energy utilization rate and inflexiability in operation when using special large machinery. Based on the design background of mountainous and hilly areas, this paper designs a small, energy saving and flexible extended range mountain orchard management vehicle. Using the modular, multi-functional, multi-purpose agricultural machinery design concept, CATIA software for the vehicle three-dimensional modeling, the power system components selection and calculation, and the power system design. Finally, it is concluded that the vehicle can stably complete the work of walking, rotary tillage and so on. The vehicle structure is reasonable,compared with the traditional orchard rototiller, improve the production efficiency, and can keep the range extender in an energy-saving working condition, so that the energy utilization rate has been greatly improved, in line with the national "two-carbon policy", for the mountain orchard management vehicle design provides a classic reference scheme.