Reduce secondary ann and arrange supplementary instrument of installing of red cloth curtain including the first connecting plate and the second connecting plate of L type, installs the starting stave on the first connecting plate, the pivot is installed to installation second riser on the second connecting plate between starting stave and the second riser, pivot one end fixed mounting tight pulley, and the spread groove is seted up to the tight pulley border, evenly sets up the several spacing groove on the tight pulley, sets up end to end's connection rope on the tight pulley, and the connection rope on upper portion is located the spread groove, evenly installs the spacing pearl of several on the connection rope, and the spacing pearl on upper portion is located limiting groove, and the diameter of spacing pearl is greater than the width of spread groove. The utility model discloses in, install the red cloth curtain on two connecting plates through the pivot, connecting plate pass through the locking bolt install the screen cashier's office in a shop, another connecting plate passes through the slider to be installed on the slide of screen cabinet, the staff stimulates and connects the rope, alright curl up or emit with control red cloth curtain, this kind of structure makes the red cloth curtain fixed firm, receive and releases the convenience, avoids the red cloth curtain to drop.