Miniature walking tractor

The utility model discloses a miniature walking tractor capable of conveniently changing a two-wheel driving mode into a single wheel driving mode, which is characterized in that a final output shaft of a gear box is a hollow shaft with a spline in the inside, the outer surface of one output end of the hollow shaft is provided with a hexagonal shaft which is convenient for connecting with a single wheel, and a two-wheel driving shaft with the spline at the outside is arranged in the final output shaft. A left and a right driving and steering control apparatuses respectively composed of wheel hubs, bearings, an internal gear clutch, an external gear sliding clutch, a steering shifting shaft and a shifting fork body are respectively arranged at the both sides of the two-wheel driving shaft. After the left and the right driving apparatuses can be removed to realize the single wheel drive, so that the utility model can replace the animal power in farming and realize the omnibearing mechanized farming in dry farming.