Abstract: With the development of radiographic testing and the higher requirement to environmental protection, computed radiography (CR) has been widely used in various industrial fields. In order to analyze the similarities and differences between computed radiography and film radiography, in this paper, the comparison and analysis of computed radiography and film radiography in offshore engineering field (mainly radiography for piping welds) were carried out basically on the theoretically and experimentally in the aspects of principle, environmental protection, working efficiency, retake rate and defects detection. The results showed that compared with film radiography, computed radiography had some advantages in environmental protection, work efficiency and retake rate.