Reversible humidity-responsive fluorescent discoloration system as well as preparation method and application thereof

The invention provides a preparation method of a reversible humidity response fluorescent discoloration system, which comprises the following steps: A) mixing anionic polyelectrolyte, fluorescent molecules and water to obtain an electrostatic spinning aqueous solution; b) performing electrostatic spinning on the electrostatic spinning aqueous solution, and arranging a mask at a receiving end to draw a first fluorescent pattern to obtain an electrostatic spinning film with the first fluorescent pattern; and C) drawing a second anti-counterfeiting pattern on the surface of the electrostatic spinning film obtained in the step B) by using a waterproof coating to obtain the reversible humidity response fluorescent discoloration system. The invention further provides a reversible humidity response fluorescent discoloration system and application thereof. The reversible humidity response fluorescent discoloration system provided by the invention has a fluorescent double anti-counterfeiting function, presents a first