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Aiming at the deterioration of surface ecological environment caused by large-scale exploitation of Jurassic coal field in northern Shanxi,and the test model of shallow coal seam is made relying on the similarity principle.According to BOTDA distributed optical fiber sensing technology,the distribution law of overburden stress and moving characteristics under reamer-pillar mining is studied,the stability of the remaining coal pillars in the mining area is analyzed,the contour graph of overburden stress is calculated,the method of determining the rupture angle and moving angle of overburden is put forward.The results show that the deformation of the coal pillar under the condition of the reamer-pillar mining will go through three stages.The deformation of the strata is divided into three stress zones along the direction and inclination.The strata in the caving zone mainly suffers the waving settlement deformation which center on these banding goaf while the strata in the water flowing fractured zone mainly suffers the settlement deformation in the central mining area and the horizontal movement at open-off cut and stopping line.