Cold-rolled strip steel final cooling table and cooling method thereof

The invention discloses a cold-rolled strip steel final cooling table and a cooling method thereof. The cold-rolled strip steel final cooling table comprises an operation table, a machining box, a conveying mechanism and a cooling box; the operation table is arranged to be of a rectangular plate-shaped structure; the machining box is fixed to the center of the top end of the operation table through bolts; connecting plates are fixedly welded to a set of vertical outer walls of the operation table; four sets of supporting legs arranged in a rectangular array mode are fixedly welded to the bottom end of the operation table, and a transverse rod is fixedly welded between every two sets of supporting legs; a cooling box is embedded into a fixing opening arranged at the top end of the machiningbox; conveying mechanisms are arranged on the two sides of the machining box correspondingly; each conveying mechanism comprises a first conveying roller, a second conveying roller, two sets of fixing rods and two sets of hy