Abstract: In order to avoid the influence of the installation of climbing frame on the overall removal of aluminum mold K plate and improve the installation efficiency of aluminum mold+climbing frame, this paper takes building 1-8^# of Great Wall Jiayuyuan as an example, optimizes the position of the guide rail, the modular layout of the climbing frame and walkway board elevation through the optimization design, collision inspection and virtual construction of the BIM model about the aluminum mold and the climbing frame. The aluminum mold K plate at the support of the climbing frame is optimized from the integral type to the local removable type, the installation sequence is as follows: the integrated aluminum alloy formwork K plate can be dismantled and the middle part of the K plate can be removed to install the support.The corner of the protruding part of the aluminum-mold external wall column is optimized from "convex" corner to "concave" corner, which ensure the operation distance between the climbing frame and the aluminum mold back is 350mm, the installation of support can be completed by partial removal of K plate. The installation efficiency of aluminum mold+climbing frame can be improved by 1 working day each time, saving about 115, 000 yuan of cost and providing a good reference for other projects.