The utility model relates to a formwork support system for construction of vault underground structure engineering, its construction that is used for the underground structure engineering, it includes adjustable base, the pole of sweeping the floor, all round victory scaffold, the support of adjustable top, panel, main joist and move about freely and quickly to bridging, wherein, adjustable base supports subaerial in the underground structure engineering, the pole transverse connection that sweeps the floor is adjustable base respectively, the all round victory scaffold erects on adjustable base to be located the underground structure engineering, adjustable top is held in the palm and is installed in the both sides and the top of all round victory scaffold, its butt the panel, the panel butt is at the side wall and the roof of underground structure engineering, the main joist is connected each adjustable top and is held in the palm, move about freely and quickly to bridging cross connection on the all round victory scaffold. The utility model discloses a structural template support?system simple structure, safe and reliable builds the convenience, and it is avoided trading when upwards buildding and props, and labour saving and time saving can effectively improve construction speed.