The invention relates to the technical field of indoor decoration, in particular to a decorative curtain. The decorative curtain comprises a mounting plate which is provided with a sliding rail, multiple sliding blocks are arranged on the sliding rail, a mounting block is movably connected to each sliding block, a curtain body is fixed to the lower end of each mounting block, multiple connecting rods are uniformly arranged on the mounting plate at equal intervals, dovetail grooves are formed in the connecting rods, multiple clamping parts matched with the dovetail grooves are fixed to the top end of the mounting plate in the length direction, the clamping parts are connected with the connecting rods through fastening devices, each fastening device comprises a limiting pin, the lower ends of the connecting rods and the lower ends of the clamping parts are provided with limiting pin holes matched with the limiting pins, the limiting pins are inserted into the limiting pin holes, fixed rods are fixed to the upper ends of the connecting rods, and the fixed rods are uniformly provided with multiple bolt holes. The decorative curtain is simple in structure and convenient to use, all parts are detachably connected, and when one part is damaged in the long-time use process, the part can be disassembled at any time for replacement or maintenance.