A device for supplementing electrode sheet with lithium, the electrode sheet comprising a current collector and an active substance layer discontinuously arranged on the surface of the current collector, and the device for supplementing electrode sheet with lithium comprising a rolling mechanism, an electrode sheet providing mechanism, and a lithium film providing mechanism; the rolling mechanism comprising two compression rollers; the electrode sheet providing mechanism located upstream from the two compression rollers, and the electrode sheet providing mechanism configured to provide the electrode sheet between the two compression rollers; and the lithium film providing mechanism located upstream from the two compression rollers, the lithium film providing mechanism configured to provide a lithium film, and the lithium film comprising a transfer film and a lithium foil; wherein the device for supplementing electrode sheet with lithium further comprises a strip providing mechanism, the strip providing mechanism configured to provide a strip between the transfer film and the compression roller on the side corresponding to the transfer film, the strip comprising a substrate and an adhesion layer discontinuously arranged on the substrate, the adhesion layer corresponding to the active substance layer of the electrode sheet; the strip providing mechanism comprises a strip release mechanism and a strip collection mechanism that are arranged upstream and downstream from the two compression rollers respectively, the strip release mechanism is configured to release the strip to the two compression rollers, and the strip collection mechanism is configured to collect the strip passing through the two compression rollers; and the rolling mechanism is configured to roll the strip, the lithium film and the electrode sheet, wherein the gap size between the two compression rollers is smaller than the sum of the thicknesses of the adhesion layer, the substrate, the lithium film, the current collector and the active substance layer and is greater than the sum of the thicknesses of the substrate, the lithium film and the current collector, to make the lithium foil in the lithium film adhere to the active substance layer. the rolling mechanism comprising two compression rollers; the electrode sheet providing mechanism located upstream from the two compression rollers, and the electrode sheet providing mechanism configured to provide the electrode sheet between the two compression rollers; and the lithium film providing mechanism located upstream from the two compression rollers, the lithium film providing mechanism configured to provide a lithium film, and the lithium film comprising a transfer film and a lithium foil; wherein the device for supplementing electrode sheet with lithium further comprises a strip providing mechanism, the strip providing mechanism configured to provide a strip between the transfer film and the compression roller on the side corresponding to the transfer film, the strip comprising a substrate and an adhesion layer discontinuously arranged on the substrate, the adhesion layer corresponding to the active substance layer of the electrode sheet; the strip providing mechanism comprises a strip release mechanism and a strip collection mechanism that are arranged upstream and downstream from the two compression rollers respectively, the strip release mechanism is configured to release the strip to the two compression rollers, and the strip collection mechanism is configured to collect the strip passing through the two compression rollers; and the rolling mechanism is configured to roll the strip, the lithium film and the electrode sheet, wherein the gap size between the two compression rollers is smaller than the sum of the thicknesses of the adhesion layer, the substrate, the lithium film, the current collector and the active substance layer and is greater than the sum of the thicknesses of the substrate, the lithium film and the current collector, to make the lithium foil in the lithium film adhere to the active substance layer.