The invention relates to a high cantilever combination retaining wall structure which has good integrity, strong structure strength and good slope contracting efficiency so as to solve the slope contracting problem of a high embankment. The high cantilever combination retaining wall structure comprises a cantilever retaining wall (1) arranged at the outer side of an embankment slope, strengthening piles (2) which are longitudinally arranged at intervals along a line, supporting connecting walls (3) which are arranged between the cantilever retaining wall (1) and the strengthening piles (2) and are fixedly connected with the cantilever retaining wall (1) and the strengthening piles (2) and a filter layer (4) which is fixedly arranged on the inner side surface of the cantilever retaining wall (1).