Abstract: At present, AR technology is rarely used in petrochemical enterprises, and there are market vacancies. The development environment applied in this paper is Unity 3D, and with the secondary development of C# language and the aid of Solidworks modeling software, the application of AR technology in petrochemical industry and petrochemical education and teaching field is realized. This paper mainly introduces the application process of AR augmented reality technology, and gives an application example of AR technology in petrochemical enterprises and petrochemical education industry.