Abstract: Engineering project in which timber pile was applied to treat prefabricated tube pile quality accident was introduced. Test results after construction completion indicated prefabricated tube pile bearing capacity dropped to much degree, reinforcement plans were compared according to location geology situation, and composite foundation with timber pile and prefabricated tube pile was adopted to deal with pile quality accident, the reinforcement parameter in design process was elaborated in detail, and foundation settlement after reinforcement was analyzed. What's more, deformation observational data after building completion indicated reinforcement effect was good, timber pile is adopted to deal with pile quality accident is feasible in the aspect of economics and technology.