Plasterboard suspended ceiling movement joint device

The utility model relates to a plasterboard suspended ceiling movement joint device, include: main joist subassembly unit includes: the main joist unit to and be used for hanging the piece with the outstanding main joist of locating the floor of main joist unit, be equipped with main joist concatenation seam between two adjacent main joist units, secondary joist subassembly unit includes: the secondary joist unit to and be used for hanging the secondary joist unit to locate the main joist unit and close on the secondary joist of piecing together the seam crossing hanging the piece, connect in the gypsum board subassembly of secondary joist unit below, and fill the filler in main joist concatenation seam. The utility model discloses plasterboard suspended ceiling movement joint device has solved plasterboard suspended ceiling because the longer fracture problem of distance has improved flexible space greatly for the expansion joint is capable of expansion and contraction under ambient condition extremely cold