▎ 摘　　要

NOVELTY - The electrochromic device has a first substrate (1), a first transparent conductive layer (2), a first electrochromic layer (3), an electrolyte layer (4), a second electrochromic layer (5), a second transparent conductive layer (6), and a second substrate (7) that are sequentially stacked. The material of first and second electrochromic layers is cathode electrochromic material or anode electrochromic material. The first and second transparent conductive layers are each independently formed by indium tin oxide, zinc oxide aluminum, fluorine-doped tin oxide, silver nanowire, graphene, carbon nano tube, at least one metal grid and silver nano-particle. The materials of first and second substrate are each independently glass or flexible material, optionally, polyethylene terephthalate (PET), cycloolefin copolymer or cellulose triacetate. USE - Electrochromic device for electronic terminal (claimed). Uses include but are not limited to photochromic glasses, electronic displays, military concealment, and building energy conservation. ADVANTAGE - The electrochromic device has excellent color changing property, and is easy to popularize to mutual switching of more colors, and can meet the demand of multi-color display and individuation customization. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a color changing method of th electrochromic device. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the electrochromic device. First substrate (1) First transparent conductive layer (2) First electrochromic layer (3) Electrolyte layer (4) Second electrochromic layer (5) Second transparent conductive layer (6) Second substrate (7)