The utility model discloses a twin-arch tunnel trunk pipe shed composite-type guide wall structure. A concrete spraying layer (2) is arranged at the top of each tunnel (1) along arch profile, a concrete pouring layer (3) is arranged on the inner side of each concrete spraying layer (2), and guide pipes (4) are distributed between each concrete spraying layer (2) and the corresponding concrete pouring layer (3) along the arch profile of the top of the corresponding tunnel. A guide wall is in permanent-temporary combination, clearance in each tunnel is utilized, and expanding excavation of a working chamber is not needed; the guide pipes matched with a big pipe shed in size are arranged on the composite-type temporary guide wall, and drilling of pipe shed holes and mounting are performed through the guide pipes, so that line straightness and operation comfortability are guaranteed, construction is convenient and easy to control, and the whole advanced support and tunnel excavation process is safer and more reliable.