The invention provides a pipeline gas industrial and commercial user data processing method and a pipeline gas industrial and commercial user data processing system. The method specifically comprises the following steps: acquiring the average monthly gas consumption of pipeline gas industrial and commercial users throughout the year, and getting the average monthly gas consumption grading standard score X according to a preset first calculation rule; acquiring the basic information and throughout-the-year gas payment of the pipeline gas industrial and commercial users, and getting the credit rating standard score Y after one-year gas consumption according to a preset second calculation rule; getting the comprehensive scores Z of the pipeline gas industrial and commercial users based on the average monthly gas consumption grading standard score X and the credit rating standard score Y after one-year gas consumption and according to a preset third calculation rule, and grading the pipeline gas industrial and commercial users according to the comprehensive scores; and processing corresponding data of the pipeline gas industrial and commercial users of different grades through a preset pipeline gas data processing mode, and outputting the data. The service efficiency of gas management workers is improved, and the security risk in gas service is reduced.