Abstract: Hazard and Operability Analysis(HAZOP) has been considered as standards and practices to ensure integrity of the design and operation,is a safety analysis method being promoted by China National Petroleum Corporation.This paper example han 2 gas gathering stations to resume the progress of promote the hazop and to show the application effect which Improve the safety degree of process production device,puts forward corrective measures and suggestions that eliminate hidden danger and conditions for safe production,Ensure that the main production facilities for the safety in production.