The subject innovation is blocking by coupling extension to extend the partition, the longitudinal direction or, with the same fasteners in to finish the extension by changing the structure of the mating surfaces in the regulation of the rotation of each space waste, work required in the partition assembly relates to a partition assembly system that can reduce the man-hours, the panel and, respectively coupled to the ends of the panel so as to connect a plurality of panels and abutting connection with each other, the closing block closing the connection in part to finish the extension of the partition in the partition assembly system including the connection portion is rotatably a rotating body is installed, the insertion member is formed in one direction extending from the rotation body, formed extending from the rotating body in a direction opposite to the direction of the insertion member is formed and neighboring the insertion member of the connecting portion is comprises a fastening member consisting of the engagement member to which the first insertion hole formed in the first ring member, extending from the rotating body in the direction of bending about the direction of the insertion member is formed is formed to be insertable into the closed block includes a first insertion groove to support the finishing block is the engaging member is inserted, the connection between the case of combining one side of the fastener other side the signed 90-degree rotation for the old one side of the fastener of the first wherein the insert and the ball fitting in the other side the fastener of the insertion member, the connection part and the closing block is coupled to the finishing block to rotate such that the fastener the engaging member of the connecting portion protrudes toward the other of said connecting portion when 1 characterized in that inserted in the insertion groove binding.