A coating apparatus for coating an electrode slurry to an electrode plate to produce an electrode, comprising: a die unit having an inlet through which the electrode slurry is introduced and an inner space for accommodating the introduced electrode slurry; a shim unit mounted in the die unit and configured to form an outlet together with the die unit so that the electrode slurry is discharged therethrough; and a cover member configured to surround an outer surface of the die unit and the shim unit so that the electrode slurry is not leaked at the outer surface, except for the outlet, the die unit including: an upper die forming an upper portion of the inner space; and a lower die located below the upper die to form a lower portion of the inner space, the shim unit being interposed between the upper die and the lower die, the cover member including at least one cover film extending in the upper and lower direction, the cover film being respectively located at both sides of the outlet at an outer surface of the die unit and the shim unit at a side where the outlet is formed, characterized in that the shim unit includes a frame formed along a rim of the inner space and having at least one open side, and one side of the frame is opened so that the electrode slurry is carried and discharged therethrough, and the cover member includes: an unwinder having a roller for unwinding and supplying a rolled cover film; and a winder having a roller for rewinding and retrieving the cover film, any one of the unwinder and the winder being located at an upper portion of the upper die, and the other being located at a lower portion of the lower die. a die unit having an inlet through which the electrode slurry is introduced and an inner space for accommodating the introduced electrode slurry; a shim unit mounted in the die unit and configured to form an outlet together with the die unit so that the electrode slurry is discharged therethrough; and a cover member configured to surround an outer surface of the die unit and the shim unit so that the electrode slurry is not leaked at the outer surface, except for the outlet, the die unit including: an upper die forming an upper portion of the inner space; and a lower die located below the upper die to form a lower portion of the inner space, the shim unit being interposed between the upper die and the lower die, the cover member including at least one cover film extending in the upper and lower direction, the cover film being respectively located at both sides of the outlet at an outer surface of the die unit and the shim unit at a side where the outlet is formed, characterized in that the shim unit includes a frame formed along a rim of the inner space and having at least one open side, and one side of the frame is opened so that the electrode slurry is carried and discharged therethrough, and the cover member includes: an unwinder having a roller for unwinding and supplying a rolled cover film; and a winder having a roller for rewinding and retrieving the cover film, any one of the unwinder and the winder being located at an upper portion of the upper die, and the other being located at a lower portion of the lower die. an upper die forming an upper portion of the inner space; and a lower die located below the upper die to form a lower portion of the inner space, the shim unit being interposed between the upper die and the lower die, the cover member including at least one cover film extending in the upper and lower direction, the cover film being respectively located at both sides of the outlet at an outer surface of the die unit and the shim unit at a side where the outlet is formed, characterized in that the shim unit includes a frame formed along a rim of the inner space and having at least one open side, and one side of the frame is opened so that the electrode slurry is carried and discharged therethrough, and the cover member includes: an unwinder having a roller for unwinding and supplying a rolled cover film; and a winder having a roller for rewinding and retrieving the cover film, any one of the unwinder and the winder being located at an upper portion of the upper die, and the other being located at a lower portion of the lower die. an unwinder having a roller for unwinding and supplying a rolled cover film; and a winder having a roller for rewinding and retrieving the cover film, any one of the unwinder and the winder being located at an upper portion of the upper die, and the other being located at a lower portion of the lower die.