The efficient application of automation control technology in the petrochemical industry plays a positive role in improving production efficiency and safety assurance.Based on this， we analyze it from the perspective of application and maintenance of automation control systems， enhancing the integration of petrochemical instrumentation and automation control technology， improving the level of informatization and the stability of system operation， has profound significance for improving the effectiveness of petrochemical instrumentation automation control. By focusing on the deep application of automation control technology and system maintenance strategies， the level of automation control and operational stability of offshore platforms are improved.