Abstract: Taking the supporting of the roadway affected by strong mining in the No.4 ultra-thick coal seam at Majialiang mine as the background，this paper analyzed the evolution law of the comprehensive stress field composed of in-situ rock stress field，mining-induced stress field and supporting-induced stress field in the auxiliary transport entry 14103 adjacent to the working face 14102 by on-site survey and numerical simulation.The in-situ rock stress test results showed that the in-situ rock stress of the roof rock of the No.4 coal seam at Majialiang mine was high stress in terms of value and its direction is N30.6～52.1°W；based on the in-situ rock stress，it is analyzed that the mining-induced stress increased significantly from the crossing point of the auxiliary transport entry 14103 and the working face 14102 to the space 50m behind the working face and tends to be stable 150m behind the working face; the on-site survey showed that the change trend of the supporting-induced stress is consistent with that of the mining-induced stress，and the significant increase of the supporting-induced stress in the auxiliary transport entry 14103 is slightly behind that of the mining-induced stress in term of space due to the influence of coal pillars；the higher the prestress of the bolts and cable bolts is，more stable its force is；when the prestress is comparatively low，the change of the internal supporting-induced stress is more fierce due to the influence of the mining.Based on the analysis of the in-situ rock stress field，mining-induced stress field and supporting-induced stress field，the supporting measures for the auxiliary transport entry 14103 were proposed.The on-site monitoring results showed that the after the mining of the working face 14102，the contraction ratio of the roadway section was only 8.8%，which completely met the requirements for roadway transport and ventilation.