PURPOSE: A rotavator is provided to eliminate the length limitation of the rotavator by allowing the rotavator to be folded using a hydraulic cylinder, thereby being improved the working efficiency of the rotavator. CONSTITUTION: A frame(2) having a heeler(7), a heeler cover(9), a driving shaft(5) is divided into two parts, and each part of the frame are coupled to both lower ends of a strut(3) by a hinge. A hydraulic cylinder(22) for rotating the frame is installed on a side end of the frame and a side of the strut. Both ends of an output shaft(23) installed in a gearbox(4) is coupled to a driving shaft(5) via a universal shaft(24) of variable length. Since the strut has a spreading locker(26) and a folding locker(28) for fixing a spreading position or a folding position of the frame and the frame has a projection(38) for engaging the lockers, the frame is capable of being folded on the top of the strut if necessary. A locking panel is coupled to a bracket(30) by a hinge, and is supported by a spring. A wire is connected to the locking panel and a lever(40) installed on the top of the strut for rotating the locking panel. The locking between frame and the strut is released by the actuating of the lever.