A method and device (200) of loop processing for an industrial process. The device (200) comprises: a pre-processing module (211), configured to pre-process a plurality of input process values (219a) based on a user predefined rule to obtain at least one processed process value, and a loop processing module (212) configured to perform a loop processing on the at least one processed process value. An automation device (200) in a standalone and simple design can be provided, achieving advanced control strategies and data processing at a low cost.