This paper analyzes the causes of the deviation and fracture of prestressed PHC pipe pile in soft soil foundation of a dock engineering，proposes reinforcement measures for the deviation of Ⅲ & Ⅳ type piles of shallow or deep cracks,and carries out inspection for the effect of the rectification.The results show that the single pile bearing capacity of Ⅲ &Ⅳ piles after reinforcement treatment can satisfy the design and construction requirements,which prove that the construction technology for treatment of the deviation and reinforcement of the PHC pile is successful,and thus may serve as reference for similar projects.