The invention relates to a method for producing 
electrochromic devices, in particular that having a large working surface area and which does not produce a 
volumetric shrinkage and can operate during a long maintenance of electrocoloured state of an electrochromic compound, high control voltages and polarity inversion. The inventive electrochromic device comprises at least two electrodes (1, 2), at least one of them being optically transparent. A closed sealed space is formed between said electrodes and filled with the electrochromic compound which is embodied in the form of a 
solid-like film. The inventive method for producing the electrochromic device consists in prefabricating an initial electrochromic compound in the form of a dispersed electrochromic 
system which contains at least a suspension and / or 
colloid. The dispersed medium of said 
system is embodied in the form of an electrochromic solution containing a liquid 
solvent, 
cathode and 
anode components, a disperse phase being embodied in the form of a finely dispersed 
polymer. Afterwards, the initial electrochromic compound is deaerated, thereby eliminating dissolved 
oxygen and air introduced by said finely dispersed 
polymer, and is used for filling the space between the electrodes.