Abstract: In this paper,Based on the summarizing the coal bumps characteristics in Zhaogezhuang coal mine at Kailuan mining group. Dynamic instability mechanism of soft rock mass,under higher stress in-situ accompanying large rheology phenomena is analyzed primarily though materials failure,structure unstable and energy accumulate-release theory,at coal-rock system. Great attention is worthily paid for that Coal-rock combination body model is the base of coal bumps in the nonlinear fracturing process. Finally this paper conclude presently forecasting and preventing methods on coal bumps or rock burst in Zhao Gezhuang coal mine.