A foundation reinforcement and inclination correction method for friction piles of a high-rise building comprises the steps of 1, building settlement and inclination analysis, wherein (1), settlement and inclination displacement monitoring, (2), supplementary investigation of geotechnical engineering conditions and (3), determination of bearing capacity of original pile foundation are included; 2, making of an inclination correction and reinforcement scheme of the high-rise building, wherein (1), determination of a reinforcement and inclination correction idea, (2), determination of a reinforcement and inclination correction target, (3), raft supplement calculation, and (4), a principle of pile supplement are included; 3, high-rise building reinforcement construction, wherein (1), foundation excavation, (2), raff construction and determination of supplement pile positions, (3), column (wall) foot reinforcement construction, (4), static pressure pile construction, (5), press-in pile quality detection, (6), settlement of large side sealing piles, and (7), original soil compaction are included; and 4, high-rise building self-weight inclination correction construction, wherein (1), the use of high-rise building self-weight inclination correction, (2), settlement of small side sealing piles, and (3), the original soil compaction are included.