The invention discloses a pulling frame of a rotary cultivator. The pulling frame is characterized in that the pulling frame is in a T shape integrally and is formed by a longitudinal rod and a transverse rod, one end of the longitudinal rod is vertically and fixedly connected with the middle of the transverse rod, the other end of the longitudinal rod is used for being connected with a tractor, and the two ends, in the length direction, of the transverse rod are hinged to a rack of the rotary cultivator. The pulling frame is simple in overall structure, by means of the structure of connecting the two ends, in the length direction, of the transverse rod to the rack in a hinge joint mode, the pulling frame adapts to the vertical bumping state in the forward motion process of the tractor on field soil better, and pull force of the forward motion of the tractor can be transmitted continuously and stably through the pulling frame to pull the rotary cultivator to move forward stably and cultivate the soil. In addition, the pulling frame has the advantages of being reasonable in structure, lower in manufacturing cost and convenient to manufacture.