The invention discloses a shallow air floatation tank water uniform distribution method. According to the shallow air floatation tank water uniform distribution method, a plurality of water distribution pipes are arranged along the radial direction of an air floatation tank so as to achieve equal surface load of the service range of each water distribution pipe, and reduce radial flowing of water body in the air floatation tank; wherein the service range of each water distribution pipe is used for referring a circular zone a corresponding water distribution box moves across when the water distribution pipe rotates around the axis of the air floatation tank for one circle; the surface load of the service range of each water distribution pipe is used for referring the specific value of water distribution amount of the water distribution pipe in a unit time to the service range of the water distribution pipe; the diameters of the water distribution pipes are arranged to be equal, or are arranged to be different, and from inside to outside, the diameters of the water distribution pipes are increased gradually. The shallow air floatation tank water uniform distribution method is capable of reducing water distribution nonuniformity, especially reducing radial flowing of water flow in the air floatation tank, and realizing real zero-speed flotation via a synchronous rotation bridge stand provided with the water distribution pipes and isolating plates.