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The utility model discloses a kind of reinforcing overlock device of trousers pocket, belong to sewing equipment technical field, including the fixedly arranged connection block on the machine body, the universal ball is rotatably arranged on the connection block, the connecting rod is fixedly arranged on the universal ball, the supporting rod is rotatably arranged on the connecting rod, the edge cover is rotatably arranged on the supporting rod, a plurality of pressing blocks are annularly arranged on the edge cover, when the pressing block is pressed on cloth, the pressing block rotates with the movement of cloth, the utility model has the advantage of improving the sewing efficiency of device.