This article focuses on the importance of flow measurement in the petrochemical industry and the crucial role of high-precision flow meters within it.Firstly,it introduces the principles and classifications of high-precision flow meters,emphasizing their applications in petrochemical production.Secondly,it explores the research progress of key technologies for high-precision flow meters,taking the modeling and optimization of fluid dynamic characteristics as an example for detailed elaboration.Finally,it summarizes the significant importance of high-precision flow meters in the petrochemical industry and points out future development directions and challenges.Through this research,we can better understand the applications and trends of high-precision flow meters in the petrochemical industry,providing a reference for technical research and applications in related fields.