The invention relates to an organic vanadium source for preparation of a vanadium dioxide intelligent temperature control film and a preparation method of the film and provides an organic vanadium source precursor of an intelligent temperature control vanadium dioxide film prepared through a sol-gel method. In the preparation method, vanadate and organic quaternary ammonium salt are used as raw materials, and the organic vanadium source precursor is synthesized through a precipitation method. According to the invention, the organic vanadium source precursor disclosed by the invention is synthesized through the simple precipitation method, thus cost is reduced; and because the vanadium source precursor provided by the invention is adopted, the thermally light adjusting intelligent temperature control vanadium dioxide film can be prepared by using the sol-gel method.