Our agricultural machinery is famous for its small size, light weight, multiple functions and high efficiency of rotary tillage, for it can go uphill, enter the water, walk on the ridge of field, cross chanels, and be easy to be shifted. And it is suitable for the work in mountainous area, hilly area, dry land, paddy field, garden and under the shed. Furthermore, it has basic functions of rotary tillage, ditching and transportation, if equiped with some relevant tools, it can be also used for pumping water, irrigation, spraying medicine, harvest, generating electricity, fertilization, planting, threshing, and defibrination, so it can be recoganized as a kind of perfect mini tiller, for its simple structure, convenient maintenance and low fuel consumption.