The utility model belongs to the technical field of the engineering construction and specifically relates to an underground pipe gallery support mounting frock frame is formed by connecting built -in fitting, mounting bracket, stand and piping lane trailing arm, this built -in fitting of its characterized in that includes crab -bolt, foraminiferous embedded plate, bolt protection groove, and foraminiferous embedded plate central authorities set up rectangular hole to along the banding bolt of rectangular hole bottom portion welding protection groove, T type the bolt head, the bolt puts into in protecting the groove, and the screw rod welding of crab -bolt is in foraminiferous embedded plate bottom four corners, the mounting bracket adopts right angle hot rolling L shaped steel to process into, and this mounting bracket one side is fixed with the T type bolt -up that the built -in fitting passes through in the bolt protection groove, is connected the position with the built -in fitting and opens the bar hole along the diagonal, and the mounting bracket opposite side is fixed with the stand fastening, the stand outside is adopted and is breathed out fragrant groove C type jar, and stand and underground pipe gallery pass through the bolt -up and connect. This frock frame can promote piping lane actual service life, and the maintenance cost is low, the combination of this built -in fitting and mounting bracket has improved efficiency of construction and quality greatly.