Abstract: In order to solve the supporting problems of gob-side entry driving in soft rock, taking a machine roadway of a coal mine in Huaibei as the background, we mainly discusses the mechanics principle of U-shape + anchor +short channel steel composite steel supporting, use numerical simulation to analyze the composite steel frame supporting and different number of combination, and optimize the supporting system, demonstrate the application of the combination of steel supporting in gob-side entry driving. A field experiment show that the composite steel frame supporting effectively controls the characteristics of roadway large deformation.