The utility model relates to a connecting frame of a ground anchor machine, which comprises a cover plate, a vertical plate, a bottom plate, a main lug plate, a door frame lug seat, a connecting rod lug plate and a connecting rod lug plate seat. The bottom plate and the cover plate are connected by the vertical plate to form a box body structure; the two ends of the box body are provided with the door frame lug seat; the part of the box body, which is opposite to the door frame lug seat, is provided with the main lug plate; the cover plate is provided with the connecting rod lug plate seat; and the connecting rod lug plate seat is provided with the connecting rod lug plate. With the box structure, the utility model has the advantages of enhancing the overall torsion resistant capability, prolonging the welding length of the lug seat, improving the strength of the overall structure due to the prolonged welding length of the lug seat and the use of the rib plate, and eliminating the hidden risk in the tensile rupture of the fixed lug seat, and can be applied in the ground anchor machine and other similar occasions.