介绍了国外石化企业信息技术应用概况，着重介绍了先进控制及优化技术的主要功能和技术要点，针对国内石化企业的差距提出了发展对策。

The applications of information technology in petrochemical companies, especially main functions and technical features of advanced process control technology and optimization technology are reviewed. Then, based on the gaps between domestic and foreign petrochemical companies, the strategy of improving process control is proposed.