The all steel cross flow cooling tower adopts air inlet on both sides and a fan at the top, which allows air to exchange with hot water through the fillers on both sides of the tower, and then wet and hot air is discharged outside the tower. The filler adopts point wave plates with convex points on both sides, which are bonded into a whole through the installation head to improve rigidity. The convex points on both sides can also avoid direct dripping, thus improving the ability to form a water film. The tail of the filler is equipped with a water collection measure.