Inverted construction stair

The utility model discloses an upside-down type construction stair which comprises an assembly type frame body, frame body connectors, bolts, a pouring stair body, an unloading steel wire rope and a wall connecting piece. A first fixing rod is fixedly installed at the lower end of the left side of the assembly type frame body, and a groove block is fixedly installed at the lower end of the first fixing rod; and a clamping block is embedded in the groove block, and a second fixing rod is fixedly installed at the lower end of the clamping block. According to the inversely-lapped construction stair, the construction stair capable of being inversely disassembled is arranged, during installation, the upper and lower assembled frame bodies can be clamped and fixed through the groove blocks and the clamping blocks to form integration, and the fixing pieces and the frame body connectors are fixedly installed, so that the construction stair can be lapped from bottom to top and also can be disassembled from bottom to t