Abstract: Taking 0203 working face of Xinyang coal mine as engineering background，and through the theoretical analysis and numerical simulation，the pressure characteristics of gob-side entry retaining roadway under caving method and filling method are contrasted and analyzed to further explore the deformation law of gob-side entry retaining roadway after total backfilling.Combined with the basic mechanical properties of high concentration of cemented filling materials，the basic roadway supporting and the strengthening support mode are designed and applied into the practical production.The application showed that the gob-side entry retaining had less deformation after backfilling with deformation rate of around 8%.The roadway roof kept complete without any large caving，and no coal wall spalling appeared at roadway.Single support or combined support of anchor rod，anchor rope，metal mesh at roadway is reliable and reasonable.The high concentration of cemented filling mining technique with gob-side entry retaining is simple and feasible.The gob-side entry retaining roadway is formed naturally after filling gob，and the fire，gas accumulation and other disasters can be effectively avoided.Thus，it has a broad application prospect.

Key words: Coal mine, High concentration of cemented filling, Gob-side entryretaining, Mine pressure, Numerical simulation