Abstract: To analyze the movement rule and pressure behavior of regenerated roof when mining the remaining lower slice of oil shale, on the background of downward mining oil shale slices in Beizao coal mine, combined with the regenerated roof model built in preliminary work which has cataclastic structure and zoning features, a similar material model of regenerated roof was constructed through improving the traditional material ratio. The characteristics of roof movement, abutment pressure distribution and support stress were studied. The results indicate that the falling rocks of regenerated roof has small crushing expansion coefficient and better compaction. Under situation of the same mining height of the upper and lower slices, both the influence sphere and peak value of lower slice are less than upper slice, which account for 38% and 51% of the upper slice mining, respectively. The support stress of lower slice accounts for 91.6% of upper slice. After the mining of lower slice, both the irregular and regular caving zone height of regenerated roof increase treble over the upper slice mining, and fissure zone height increases about 1.6 times. The results provide some scientific proof for mining design and selection of hydraulic support in similar conditions.