The invention discloses a high-ground-clearance field cart for corn field operation. The high-ground clearance field cart comprises a chassis and a cart body installed on the same. The cart body is provided with a housing; driven wheels and drive wheels are respectively mounted on front and back sides of the lower end of the chassis rotationally; the two drive wheels are respectively mounted on driver shafts of a rear axle rotationally; opposite ends of the two driver shafts of the rear axle are hinged to a rear axle frame; dampers arranged obliquely are hinged between the upper end of the rear axle frame and the upper portions of outer walls of the driver shafts of the rear axle respectively. The high-ground-clearance field cart is adaptable to bumpy corn field, is stable without left and right shake during operation after being assembled owing to reasonable arrangement and design of the rear axle frame, the driver shafts of the rear axle and the dampers; thus, spraying effect of a thermal sprayer during work is guaranteed, and pest control and prevention efficiency is then improved.