Provided is a coating apparatus for coating with coating liquid a surface of a strip-body carried in a fixed direction includes, a primary bar extending along a width direction of a carrying plane, which is a carrying path of the strip-body, a secondary bar extending in parallel with and on the downstream side of the primary bar, and a between-bars liquid reservoir disposed between the primary and secondary bars for storing the coating liquid therein at the time of coating. Conditions are set so that relationship W2