The invention discloses a composite gob-side entry retaining method using mining roadway wedge-shaped regeneration wall and single-leg shed beam. The method is characterized in that after the coal bedis cut off in the mining process, an advance notch is communicated with a mining working face to form a wedge-shaped notch, a concrete masonry wall is built at the lower section of the wedge-shaped notch, the collapsing gangue in a gob is naturally and downwards stacked to fill the wedge-shaped notch to form a filling body, and the concrete is sprayed to the filling body in the wedge-shaped notch, so as to complete the gob-side entry retaining. The method has the advantages that by fully utilizing the characteristic of the gangue naturally sliding down after a top plate of the inclined miningworking face collapses, support rods are densely installed to block the gangue in the early stage, then the gangue naturally falls down, and the concrete is sprayed to strengthen the gangue filling body, so that the structure of the gangue filling body is enhanced, and the strength of the filling body is improved; by adopting the wedge-shaped notch, the gangue automatically slides down to extrudeinto the wedge-shaped notch, and then the gangue is densely filled into the wedge-shaped notch to form the filling body.