Abstract: Methanation technology is important for coke oven gas( COG) and coal to synthetic natural gas( SNG).Domestic research institutions were active in this field to break through the monopoly of foreign companies. This paper systematically reviewed the progress of methanation,mainly analyzed its present application status in the field of COG,and briefly introduced its application prospect in the field of SNG.To reduce the risk of its industrial application for the first time,some advices were put forward.Domestic technologies had been widely developed,and achieved commercial applications in COG with higher market share than foreign technologies.The technology had also beeh successfully developed in coal to SNG,with a bright industrial application prospect. It was advised to refer experiences from other similar engineering projects and to pay more attention to security analysis and equipment selection when first apply domestic technologies.