Abstract: This invention provides a rating method and rating apparatus for a production process having the following features. Plural performance rating items are prepared in advance as rating indexes for the production process. Addition or subtraction of points or another arithmetic operation for rating is performed in accordance with whether or not a currently executed production process satisfies the respective performance rating items, thus calculating a final rating value. The final rating value is displayed in a graph. This enables comprehensive rating of performance of an entire production process and multilateral analysis.