<p>This paper focuses on the corrosion behavior and protection technologies of petrochemical pipeline materials in high-pressure and high-temperature environments. The corrosion mechanisms, influencing factors, and common types of corrosion are systematically analyzed. Through in-depth research, the latest protection technologies are summarized and evaluated. Six tables are used to organize and present relevant data, providing a comprehensive understanding of the subject. This study aims to offer theoretical support and practical guidance for improving the service life and safety of petrochemical pipelines under harsh conditions, and to promote the development of the petrochemical industry.</p>