The invention relates to the technical field of mechanical machining equipment, in particular to a thin-walled tank flexible roll bending numerical control plate reeling machine. The thin-walled tankflexible roll bending numerical control plate reeling machine comprises a base, a main drive mechanism, a first conveying mechanism, a second conveying mechanism and a third conveying mechanism, and further comprises a correcting barrel, a fourth adjusting mechanism, a limiting mechanism and a displacement mechanism. The correcting barrel can make contact with the inner wall of the top end of a round pipe, the top end of a molded part is supported and limited, the molding effect is better, and the shape is more regular; the steel board round pipe passes through the position between a first baffle and the second baffle in the rotating process, the steel board is prevented from shifting during machining, the machining process is more stable, the interval between the two baffles is adjusted by a supporting mechanism, and the application range is wide; and after machining is finished, the displacement mechanism drives the limiting mechanism to move, then the steel board round pipe is pushed out through the second baffle, a second rotary motor drives the first baffle to downwards turn over, and an operator fetches the steel board round pipe conveniently.