Abstract: Human engineering activities have gradually become the key inducing factor of geo-hazards at the disturbance region under the process of large-scale and dense hydropower development in West China, which arouses extensive attention. The Shang Tianzhen gully is a typical debris flow gully where is born of disturbances. On the basis of the investigation and analysis on formation process, fluid property and activity features, trend of development and debris flow growth characteristics are revealed. Especially, comparison survey shows that engineering disturbances take an important role in the growth of debris flow. In addition, it is predicted that engineering influence of debris flows in accordance with the engineering capabilities. All the contents mentioned above are signification to solve the similar engineering problem.