Abstract: In accordance with the need of high trafficability field machinery of field management for tobacco in the mid and late stage,a four-wheel self-propelled high trafficability field machine was designed, which included an arch chassis with engine and transmission arranged on one side. Its maximum trafficable height is 1 700 mm, with the speed range from 1.0 to 18 km/h. Combined with different tools, the machine can be used for various kinds of field works, such as protecting plants, cultivating lands, ridging, transplantation, mulching film, cultivation and banking, topping, picking tobacco, uprooting the cigar pipe. Field test with the prototype proved that it had the characteristics of little working intensity, high trafficability, low losses of tobacco, and high working efficiency.