Abstract: In order to solve problems of difficult entry of spray machinery for plant protection and poor plant protection effect due to complex terrain of hilly and mountainous areas, a single track remote controlled self-propelled misting machine for hilly orchards was designed．Through theoretical analysis and calculation, control system, transport track system and air supply spray system were designed and selected by combining track design with mist spreading machinery．Field test results showed that track misting machine has a driving speed of 0.7 m/s, a maximum climbing slope of 40 °, and a maximum remote controlled distance of 200 m; the minimum ground clearance height of entire machine was 600 mm; coverage rates of internal branches and leaves of apple tree were 43.20% and 21.80%, respectively, while coverage rates of external branches and leaves of apple tree were 72.26% and 35.12%, respectively．The track misting machine runs smoothly, is safe and reliable, has stable remote controlled signals, and high efficiency in plant protection operations．It could provide reference and guidance for design and manufacturing of plant protection machinery in complex terrain of hilly and mountainous areas in China．