The utility model belongs to the technical field of urban rail transit engineering design and construction, especially, relate to a horizontal envelope of rock texture layer subway access & exit segmentation shaped steel, a serial communication port, lateral wall shaped steel passes through lateral wall anchor assembly is fixed in on the foundation ditch excavation side, lateral wall suspended net shotcrete cover in the combination forms wholly on the lateral wall shaped steel, the bottom plate set up in in the end suspended net shotcrete of hole, the roof set up in the upper end of side wall, bottom plate, side wall, roof link to each other and form the access & exit that is located the foundation ditch, the access & exit with all set up the waterproof layer between lateral wall suspended net shotcrete, the hole end suspended net shotcrete, concrete canopy guard circle is located foundation ditch ground both sides. The utility model discloses can guarantee to adopt under city complex environment narrow and small space the quick open cut of simple equipment construction access & exit structure, the effective control stratum warp stabilizes with the foundation ditch for construction speed, reduce project cost.