The invention relates to a cantilever type piling supporting structure and a combination stiffening filling pile in a branch anchor type piling supporting structure. The combination stiffening fillingpile comprises a plain concrete pile shaft, a reinforcing cage, a profile steel skeleton which is coaxial with the plain concrete pile shaft wrapping up the reinforcing cage and the profile steel skeleton; the profile steel skeleton comprises more than one channel steels or I-beams; the reinforcing cage comprises longitudinal bars uniformly distributed on the circumference, ring-shaped reinforcing ribs and tie hoops encircling the longitudinal bars; the diameter of the plain concrete pile shaft is 400 to 1200 mm; and the pile length is 5-25 meters; more than one channel steels or the I-beamsand the longitudinal bars of the reinforcing cage are positioned inside a tensile region of the same circumference or in the interior of the reinforcing cage; the channel steels or the I-beam ventralshields are uniformly distributed with shear keys from top to bottom.