At present,the maximum mining depth of Baiyinhubu mining area has reached 900 m,the geological stress environment is complex,the deep surrounding rock is relatively broken and accompanied by geological disasters such as rock burst.In order to further study the stability of surrounding rock and its control measures in the mining process,the stress relief method was used to measure the crustal stress at 7 measuring points in 5 horizontal levels of the mining area.Based on LabVIEW calculation program compiled by improved algorithm,the magnitude,direction and inclination of the stress at the measuring points were obtained,the crustal stress field model was established,and the spatial distribution law of the stress state in the mining area and the relationship between the stress field and geological structure were analyzed.The results show that the crustal stress is dominated by horizontal stress,the average azimuth angle of the maximum principal stress is 236°.NE-direction extensional fault F2 controls the structure of the mining area.The maximum horizontal principal stress direction of the measuring points in the mining area is all located in NE-SW direction,and the direction of the regional tectonic stress field is the same as the measured original rock stress direction.