The invention discloses a passivation area cleaning method. The passivation area cleaning method comprises the steps that passivation liquid in a liquid storage tank is discharged into a working tank;a first coating roller or a first pickup roller on a roller coater is detached; impurities are cleaned in the liquid storage tank according to a first preset requirement; a second coating roller or asecond material picking roller is mounted on the roller coater; a passivation liquid circulating pump is opened in a circulation system, and the passivation liquid is injected into the liquid storagetank; when the passivation liquid circulating pump is circulated for a preset time, the passivation liquid circulating pump is closed; the impurities are cleaned at the liquid level of the passivation liquid in the working tank according to a second preset requirement; filter elements are sequentially cleaned in the circulation system, and a flow adjusting valve in the circulation system is cleaned; after the passivation liquid circulating pump is restarted, the roller coater is started, so that the technical effects that the cleaning process is normalized, standardized and quantified, the cleaning effect is good, and the production operation and the quality stability are ensured are achieved.