Abstract: Based on the situation that natural gas in China is rapidly changing into a leading gas resource of city gas, combined with actual cases, market research about developing and utilizing city gas in the rlew period are introduced, which includes prophase preparation of gas project, market investigation and study, data processing and analysis and/or forecast, and among them, main purpose of "prophase preparation of gas projects-is to initially determine market research direction in natural gas utilization; market investigation and study" is to collect information about relative policy for gas consuming cities·information about gas consumers.as well as the information about gas developing situation for gassing cities and that of competitors; "data processing-means a quantitative analysis on gas consuming load, gas price and consumers' affordability to the price and "analysis and/or forecast" is to analyze and judge gas market on the objective, comprehensive and rational basis and to provide a guide in reasonable utilization of gas resource so as to develop gas business.