Abstract: In order to reveal the distribution laws of abutment pressure of gangue backfillng working face, taking 7608 gangue backfilling working face of Xingtai Mine as engineering backgroud, we mainly use theoretical analysis, numerical simulation and in-situ observation to study deeply. The results show that the filling boby of gangue backfilling plays a supporting role in overlying rock, so the slow growth of advanced abutment pressure tends to be stable, the peak strength of advanced abutment pressure in gangue backfilling working face is smaller than that in complete caving, the coefficient of stress concentration could reduce, the coal wall peak decreased from (6 to 8 m) to (4 to 6 m) and the influence range decreased from (40 to 55 m) to (30 to 40 m).