Abstract: Based on the formation mechanism of thrust faults,the crustal stress environment around thrust faults was theoretically analyzed. Taking the F16 thrust faults of Yima coalfield as an engineering background,a simplified me- chanical model of thrust faults with cambered faults plane was built,and the stress distribution characteristics in a cer- tain range near two sides of thrust faults were obtained. The physical variation process of coal face impacted by thrust faults which were at the stage of activation-instability and the change laws of faults slip and coal seam stress before and after the impact. The typical coal bumps cases of the F16 thrust faults of Yima coalfield were analyzed and its stress characteristics were revealed by the technique that combined 3 dimensional refined numerical simulation with field practice. Results of those researches are as followed:when the upward thrust slip action of soft coal-rock mass was ob- structed by hard overlying strata,the hard coal-rock mass will experience stress concentration,and an action of stress increase will occur in a certain range near two sides of faults. Stresses born by coal beam near faults during actual min- ing,including advanced abutment pressure,faults abutment pressure,impact stress of destabilization slide of two sides and high energy stress wave caused by abrupt destabilizing destruction of faults,take varied effects according to the different distance between workface and thrust faults. According to the different effects caused by one stress or the su- perposition of more stress sources,coal bumps induced by thrust faults were classified as tectonic stress field mode, faults activation mode and faults destabilizing slip mode. The induction mechanisms of coal bumps induced by thrust faults were systematically revealed from the aspects including:crustal stress environment in the area of thrust faults, coal beam stress characteristics of areas near to thrust faults under mining affection,dynamical impact effect of work- face under mining affection caused by the slip of faults at the stage of activation-instability. The results of this research can provide references for the pre-warning and control of coal bumps caused by thrust faults.