The walking tractor is small in size, light in weight, simple in structure, low in price, flexible and good in passing performance. It is not only a good farming machine for small paddy fields, dry fields and hilly areas, but also suitable for various operations in orchards and vegetable gardens. In addition, the walking tractor can also be matched with various agricultural and sideline products processing machinery for fixed operation and short-distance transportation, with long annual use time and high comprehensive utilization performance. Therefore, among the tractors produced and used in China, the number of walking tractors is the largest. Its disadvantages are low power, low productivity, poor economy and high labor intensity in paddy field operation.