With the rapid development of pipeline integrity management technology and the actual needs of safe operation of oil and gas pipelines, the inspection of pipeline construction quality and the safety monitoring technology of in-service pipelines have received special attention from the industry, and various pipeline inspection and monitoring technologies have also flourished. Developed. This paper systematically introduces the development status of oil and gas pipeline detection and monitoring technology at home and abroad, and points out the future development direction, including magnetic flux leakage detection technology, ultrasonic detection technology, pipeline monitoring optical fiber sensing technology, pipeline Phased array ultrasonic testing technology, digital ray detecting technology and ultrasonic guided wave detecting technology for welding nondestructive testing technology.