Hexagonal ceiling decorative plate conversion layer fixing structure

The utility model relates to the technical field of building construction, in particular to a fixing structure for a conversion layer of a hexagonal ceiling decorative plate. Comprising a lower decorative layer and a transfer layer connected with a building top plate to fix the decorative layer, and the decorative plate comprises a left longitudinal edge, a right longitudinal edge and four inclined edges located on the front sides and the rear sides of the longitudinal edges. A plurality of main keels are arranged in parallel at intervals in the left-right direction, auxiliary keels which are transversely arranged are connected to the main keels, the auxiliary keels are arranged perpendicular to the main keels, a plurality of parallel auxiliary keels are arranged at intervals in the front-back direction, and the decorative plates are fixed to the auxiliary keels. The auxiliary keels are arranged at the joint of the two rows of decorative plates and located over the midpoints of the bevel edges of the decorati