Abstract: Using fractal theory,we analyzed the distribution characteristic and morphology of mine debris flow gullies based on data of mine debris flow in two regions,and compared mine debris flow gullies with natural debris flow gullies in four regions.We find that(1) Fractal dimensions of debris flow gullies have clear meaning,that is,the smaller fractal dimensions,the greater impact to the formation and development of debris flow gullies.(2) The fractal dimensions of the catchment area,slope and length of debris flow gullies are different.Among them,the fractal dimensions of the catchment area is least,that is,the catchment area brings the most significant influence to the both formation and development of debris flow gullies.(3) Based on the analysis above,we put forward a new concept:nature-mine debris flow.