Indoor decoration wallboard mounting structure

The utility model relates to an interior decoration wallboard installation structure, which comprises a pre-fixing piece fixed on a wall surface and a clamping piece fixed on the back surface of a wallboard, the pre-fixing piece comprises installation battens which are transversely arranged, the installation battens are vertical to the wall surface, the installation battens are arranged in parallel up and down, the clamping piece comprises a clamping block, and the clamping block is fixed on the back surface of the wallboard. The multiple clamping blocks are distributed in the length direction of the mounting batten at intervals, clamping grooves used for being connected to the mounting batten in a clamped mode are formed in the clamping blocks, and limiting structures used for preventing the mounting batten from being disengaged from the clamping grooves are arranged between the mounting batten and the clamping grooves. During installation, only the installation batten needs to be clamped in the clamping gro