Abstract: This paper compares the energy efficiency of digital ray imaging (DR) technology and film ray detection technology in nuclear power plants from the aspects of personnel input, occupation time, field implementation and cost input, so as to provide support for the further application of digital ray imaging technology in nuclear power. Through data analysis, it is concluded that there is still a large room for the promotion and application of DR detection technology, but in a long period of time, DR detection technology and film detection technology will still exist in parallel and complement each other.