Abstract:This paper expounds the importance of quality inspection of water and hydropower engineering comprehensively, and analyzes the application and effect of several common test detection methods deeply. Firstly, the basic concepts and characteristics of water and hydropower project quality are systematically sorted out, and its core position in ensuring project safety and improving construction quality is clearly defined. Secondly, several common test detection methods are introduced, the technical principles of each method are analyzed, and the specific application effects of these detection methods in the quality control of water and hydropower projects are discussed. Therefore, their contribution to the improvement of project quality is evaluated. Finally, the development trend and future prospect of quality inspection of water and hydropower engineering are summarized.