Stable ceiling joist structure for building decoration

The utility model relates to the technical field of building decoration, in particular to a stable ceiling joist structure for building decoration, which comprises two bottom plates and four suspenders, the left ends and the right ends of the two bottom plates are provided with first sliding chutes, and the two bottom plates are connected with four connecting mechanisms in a sliding manner through the first sliding chutes; keel bodies are fixedly connected to the upper ends of the two bottom plates, second sliding grooves are formed in the upper ends of the two keel bodies, threaded rods are connected to the upper walls and the lower walls of the four hanging rods in a penetrating and threaded mode, fixing mechanisms are connected to the upper ends of the four threaded rods located on the upper portion through bearings, and fixing assemblies are arranged on the left walls of the four connecting grooves. According to the stable ceiling joist structure for building decoration, through the arrangement of the fix