The utility model provides an inclined steel pylon deviation correcting device for a two-sort angle steel main material. The deviation correcting device is particularly suitable for correcting an inclined steel pylon in the coal mine subsidence area. The deviation correcting device comprises hydraulic props symmetrically arranged on supports of the two sides of the inclined steel pylon through hinged bases. The left side and the right side of the steel pylon of the two-sort angle steel main material are symmetrically provided with two angle steel internal holding clamps, and the front side and the rear side are symmetrically provided with two auxiliary angle clamps. The auxiliary angle clamps are composed of V-shaped auxiliary angle clamp connecting plates, rib plates arranged on the inner sides of the V-shaped auxiliary angle clamp connecting plates, and a plurality of pairs of nuts arranged at intervals and in a pairing mode. The V-shaped auxiliary angle clamp connecting plates between each pair of the nuts are provided with grooves. Two wings of the two angle steel internal holding clamps are hinged to piston rods of the hydraulic props of the two sides. The piston rods of the hydraulic props are provided with pressure sensors. The deviation correcting device is high in bearing capacity, few in adopted tools, flexible to operate, convenient to construct, high in precision, good in reliability and high in practicality.