An electrochromic device, comprising: a first substrate; a second substrate; and a plurality of electrochromic material units, disposed between the first substrate and the second substrate and spaced apart from each other; wherein each of the plurality of electrochromic material units is switchable between a colored state and a transparent state; the electrochromic device further comprises: a first conductive structure, disposed on a surface of the first substrate adjacent to the second substrate, wherein the first conductive structure comprises a first conductive layer and a first wiring which are stacked on one another and electrically connected to each other; a second conductive structure, disposed on a surface of the second substrate adjacent to the first substrate, wherein the second conductive structure comprises a second conductive layer and a second wiring which are stacked on one another and electrically connected to each other; and a frame (15, 15a), disposed between the first conductive structure and the second conductive structure; wherein the frame (15, 15a), the first conductive structure, and the second conductive structure cooperatively define a plurality of receiving spaces, and each of the plurality of electrochromic material units are disposed in a corresponding one of the plurality of receiving spaces; it is characterized in that the frame (15, 15a) defines a plurality of filling inlets, and the plurality of filling inlets have a one-to-one correspondence with the plurality of receiving spaces; the first wiring, the second wiring, and the frame (15, 15a) are disconnected at the plurality of filling inlets, and the plurality of filling inlets are sealed by a sealing member. a first substrate; a second substrate; and a plurality of electrochromic material units, disposed between the first substrate and the second substrate and spaced apart from each other; wherein each of the plurality of electrochromic material units is switchable between a colored state and a transparent state; the electrochromic device further comprises: a first conductive structure, disposed on a surface of the first substrate adjacent to the second substrate, wherein the first conductive structure comprises a first conductive layer and a first wiring which are stacked on one another and electrically connected to each other; a second conductive structure, disposed on a surface of the second substrate adjacent to the first substrate, wherein the second conductive structure comprises a second conductive layer and a second wiring which are stacked on one another and electrically connected to each other; and a frame (15, 15a), disposed between the first conductive structure and the second conductive structure; wherein the frame (15, 15a), the first conductive structure, and the second conductive structure cooperatively define a plurality of receiving spaces, and each of the plurality of electrochromic material units are disposed in a corresponding one of the plurality of receiving spaces; it is characterized in that the frame (15, 15a) defines a plurality of filling inlets, and the plurality of filling inlets have a one-to-one correspondence with the plurality of receiving spaces; the first wiring, the second wiring, and the frame (15, 15a) are disconnected at the plurality of filling inlets, and the plurality of filling inlets are sealed by a sealing member. a first conductive structure, disposed on a surface of the first substrate adjacent to the second substrate, wherein the first conductive structure comprises a first conductive layer and a first wiring which are stacked on one another and electrically connected to each other; a second conductive structure, disposed on a surface of the second substrate adjacent to the first substrate, wherein the second conductive structure comprises a second conductive layer and a second wiring which are stacked on one another and electrically connected to each other; and a frame (15, 15a), disposed between the first conductive structure and the second conductive structure; wherein the frame (15, 15a), the first conductive structure, and the second conductive structure cooperatively define a plurality of receiving spaces, and each of the plurality of electrochromic material units are disposed in a corresponding one of the plurality of receiving spaces; it is characterized in that the frame (15, 15a) defines a plurality of filling inlets, and the plurality of filling inlets have a one-to-one correspondence with the plurality of receiving spaces; the first wiring, the second wiring, and the frame (15, 15a) are disconnected at the plurality of filling inlets, and the plurality of filling inlets are sealed by a sealing member.