The invention discloses a dynamic superimposing coupling supporting method and a supporting structure for fault fracture zone roadways, and aims to provide a dynamic superimposing coupling supportingmethod and a supporting structure for fault fracture zone roadways. Reliable supporting effects can be realized by the dynamic superimposing coupling supporting method and the supporting structure. The dynamic superimposing coupling supporting method includes erecting steel arches on tunnel faces of the complicated fault fracture zone roadways; annularly grouting holes in the external edges of thesteel arches in advance by the aid of advanced small guide pipes; excavating the roadways according to designed sections after the holes are completely grouted and slurry is solidified; timely carrying out primary spraying on surrounding rock on the surfaces of the roadways, hanging nets after primary spraying is completely carried out, arranging anchor rods and anchor cables and carrying out secondary spraying; carrying out bolting grouting reinforcement on two sides of each roadway and roofs and floors on the basis of anchor net cable spray coupling supporting. The dynamic superimposing coupling supporting method and the supporting structure have the advantage that the problem of difficulty in enclosing existing complicated fault zone large-section roadways due to severe deformation ofthe existing complicated fault zone large-section roadways, roof falling, wall caving, violent floor heave and the like can be effectively solved by the aid of the dynamic superimposing coupling supporting method and the supporting structure.