Abstract: With the rapid development of economy, in the process of the development of highway bridges, the development of post tensioning prestress technology is very important and has been widely used in the construction of highway bridges. However, the application process of this technology is not ideal, and there are still some fields worthy of further research to make its development more perfect and practical. Based on practical work experience, This paper discusses the importance of studying the post tensioned prestress technology of bridge engineering, analyzes the preparation before the post tensioned prestress construction, and studies the application of post tensioned prestress technology in highway bridge construction, hope to provide reference for relevant workers