The utility model discloses a scrubbing tower reboiler is with full -automatic steam current -limiting control gate, contain a barrel, the one end of barrel is equipped with an upper seal circle, theother end of barrel is equipped with sealing washer, be equipped with a pivot in the barrel, be equipped with a baffle in the pivot, the outer wall of barrel is equipped with an upper fixed plate anda bottom plate, be equipped with a pneumatic cylinder between an upper fixed plate and bottom plate, be equipped with a hydraulic stem on the pneumatic cylinder, change a tip of the axis fixed connection control lever, terminal and the hydraulic stem swing joint of control lever. The utility model discloses an insert the delivery duct way of reboiler when scrubbing tower reboiler is with full -automatic steam current -limiting control gate uses, this steam current -limiting control gate is controlled by the pneumatic cylinder, and pneumatic cylinder control hydraulic stem is flexible and drivethe pivot rotation, and the pivot drives the baffle upset again to the realization is to steam conduit steam flow's control, and nimble adjustment can be done as required to the flow in the steam conduit like this, and then can effectively improve the operating stability of scrubbing tower.