Abstract: As a trenchless technology, pipe jacking is widely used in hydraulic and municipal engineering, but at present, there are few studies on the factors that affect the efficiency of pipe jacking construction. In this paper, taking Qixin reservoir diversion project of the second phase project of clear water into the river as an example, the changing law of the construction efficiency of artificial and mechanical pipe jacking under complex geological conditions are introduced, and the influencing factors for the construction efficiency of artificial and mechanical pipe jacking are analyzed. At last, some suggestions are forward to improve the construction efficiency of pipe jacking. The research results can provide reference for the application of artificial pipe jacking and mechanical pipe jacking in similar projects.