The invention discloses a high-speed roller hemming system based on a servo rotating table and a truss manipulator. The high-speed roller hemming system comprises a piece feeding station, a roller hemming station and a piece discharging station which are sequentially arranged in a connected mode from left to right, a rotating table is arranged on the roller hemming station, a mold is fixedly arranged on the rotating table, a plurality of roller hemming robots are arranged in the circumferential direction of the rotating table in a surrounding mode, the truss manipulator is arranged on one sideof the rotating table, wherein the truss manipulator comprises a truss, a moving block and a vertical arm, the moving block is arranged on the truss in a sliding mode and can move left and right along the truss, the vertical arm is arranged on the moving block in a sliding mode, the bottom of the vertical arm is connected with a roller hemming grabbing tool through a connecting mechanism, in theroller hemming process, positioning and pressing of a door cover are achieved through the roller hemming grabbing tool, roller hemming operation is performed on the rotating door cover through the roller hemming robots, and after roller hemming is completed, the door cover subjected to roller hemming is moved out of the mold and is sent to a piece discharging table of the piece discharging stationthrough the roller hemming grabbing tool. The high-speed roller hemming system has the advantages that the roller hemming takt is improved, and the roller hemming quality is guaranteed.