A mountain orchard transport vehicle with single crawler was designed.The main body of that dimension is 1 540 mm×600 mm×815 mm,assembled by a single crawler walking device,frame,transmission,power systems and other equipment.The vehicle centroid analysis and ergonomics were used to determine the structure and movement parameters of vehicle.Creo was operated to build a model to calculate the vehicle’s centroid position.Based on the vehicle’s centroid position,the stability of the vehicle on the lateral and longitudinal slopes was analyzed.With full load,the prototype under different working environment was tested.Results showed that the maximum load capacity was 75 kg,with the ability to go up 10 degrees and go down 30 degrees of the longitudinal slope.It can run across the slope of 20 degrees and run through various complex roads.The vehicle can well meet the requirements of mountain orchard lateral transport.