Petrochemical industry plays a key role in industrial production of China,its market is expanding,and the requirements for product quality are increasing.In order to improve the production efficiency and ensure the product quality,the petrochemical industry needs the wide application of automation control technology.Considering the high risk factor in the petrochemical industry,the application of modern scientific and technological means can improve the safety of the work,and make the petrochemical production more intelligent and modern.Through in-depth research and application of automation control technology,the petrochemical industry can realize the optimization of the production process and sustainable development.This paper discusses the automation control technology in petrochemical instruments,aiming to provide reference for related work.