Pipeline is the main method of natural gas transportation.However
gas pipeline leak occurrs frequently due to corrosion
third-party damage and so on
not only affecting the normal transmission of gas
but can also causing environmental pollution
fire
explosion and posing a great threat to people’s lives and property safety.So gas pipeline leak detection and location technology has great practical significance and broad application prospects.The current domestic and international methods of leak detection and location are introduced in this paper.And the advantages and disadvantages of various detection methods are pointed out and their application conditions are analyzed.