Double-layer expandable project cost data display board for project cost

The double-layer expandable project cost data display board comprises a storage box, a first display frame and a fixing frame, a supporting frame is movably installed at the rear end of the fixing frame, a supporting rod is installed between the supporting frame and the fixing frame in a sliding mode, and the storage box is movably installed at the top of the fixing frame. A display area is arranged at the front end of the storage box, a first display frame and a second display frame are slidably mounted in the storage box and extend out of the storage box, and sliding frames are fixedly mounted at the rear ends of the first display frame and the second display frame. The first showing stand and the second showing stand are installed in the containing box in a sliding mode, multi-layer showing is formed and matched with the showing area for use, the working efficiency is improved, the supporting columns are installed at the rear end of the first showing stand and the rear end of the second showing stand in a