Thai Nguyen province's terrain mostly low mountains, facilitate the development of agriculture, forestry and industrial construction projects. However, besides the favorable conditions for economic development, there are other difficulties caused by natural disasters such as: floods, flood debris, landslides, soil erosion, etc. The phenomenon is not only to severe environmental consequences, but also no small influence on the socio-economic development, as well as the lives of people in the province. Formation causes accidents not only from nature but also by the activities of living and production of man-made. Therefore, the study of the current status and cause all kinds of disasters, thereby making the solution against a very urgent problem, with theoretical and practical significance.