The invention provides an operation control method for producing a passivated product. The method comprises the following steps of obtaining order requirements of a strip steel, wherein the order requirements include that passivation is needed and passivation is not needed; obtaining a process flow according to the order requirement; obtaining production parameter information according to the process flow; fitting and setting a control parameter value according to the order requirement, and the production parameter information; and controlling a passivation roller coater to carry out corresponding operations of automatic closing and opening according to the order requirement and the control parameter value. According to the method, the technical problems that in the prior art, manual control passivation is adopted, parameter setting errors exist, or products not needing passivation are passivated while products needing passivation are not passivated, and the quality of a strip steel isseriously affected are solved. The technical effects that automatic closing and automatic opening of the passivation roller coater are remotely controlled, remote automatic adjustment and automatic passivation control are achieved, errors caused by manual participation are avoided, accuracy of parameters is guaranteed, and requirements of passivated products are guaranteed.