The invention discloses a method for rapidly preparing an anodized titanium nanotube array film. The steps are as follows: folding the polished titanium sheet into a "U" shape, inserting the first end of the titanium sheet into the first electrolytic cell, and The second end of the first electrolytic cell is inserted into the second electrolytic cell, the first electrolytic cell is provided with a first graphite plate electrode, the second electrolytic cell is provided with a second graphite plate electrode, and the two graphite plate electrodes are respectively connected to the first end and the second end of the titanium sheet Parallel and equal distance, energized for constant voltage anodizing treatment. In the present invention, under the condition of closed bipolar electrochemical anodic oxidation, the titanium sheet is rapidly, uniformly and stably formed into a regular titanium oxide nanotube array film in a fluorine-containing electrolyte, and the growth rate of the nanotube can reach 2.0 μm min ‑1 Above, this method can control the growth rate of the oxide film by changing the ammonium fluoride concentration of the electrolyte in the two electrolytic cells and the size of the titanium sheet area in the cathodic electrolytic cell, and the oxide film grown under high current density is not easy Breakdown occurs.