Abstract:Engineering project is based on the progress of society and science and technology, it is a product of economic development and social progress. In this paper, literature survey and expert interview was used. Firstly, on the basis of analysis on individual, group, technical project influence factors, main factors to influence the engineering project were refined, and these factors were classified, adjustment, deleted and patched combining expert opinion. Influencing factors of engineering project were abstracted. The interaction and feedback mechanism between the elements were studied based on system dynamics so as to reveal the inner mechanism of engineering project group innovation activities. Then the sensitivity analysis was done on the key element—popularize strength of innovation method to bring the effect on the overall performance. The significance of strengthening popularize strength of innovation method to project implementation was showed. Finally, the countermeasures to promote engineering and technical project innovation were proposed.