Most gas distribution pipeline are located in densely populated areas and their transmission mediums are characterized by high pressure, combustibility and explosiveness, so the consequences will be quite serious once pipeline leakage happens. In order to improve the safety operation level of gas distribution pipeline, this paper carried out investigation and applicability analysis on foreign relevant laws, regulations and standards. Then, by referring to domestic and foreign successful experience in the integrity management of gas transmission, the similarities and differences between gas distribution pipeline and gas transmission were analyzed and accordingly the system structure and main content of the integrity management of gas distribution pipeline were determined. Finally, based on PetroChina's achievements in the construction practice of integrity management system, the system was verified and improved. And the following research results were obtained. First, integrity management is an effective means to ensure the safe operation of gas distribution pipeline. Second, the integrity management of gas distribution pipeline mainly includes six key links, i.e., data acquisition & management, risk assessment, leakage management, detection & evaluation, repair & maintenance, and check & efficiency evaluation. Third, the implementation of the integrity management of gas distribution pipeline needs five support elements, including laws, regulations & standards, system documents, support technologies, system platforms and organizations. Fourth, the focuses of the integrity management shall be determined according to pressure grades. Fifth, it is recommended to embed the system documents of integrity management into the QHSE system, take the data management as the important link of system document construction and include the content of system documents into the information system. Sixth, the integrity management system shall be improved continuously. In conclusion, the research results can provide reference for the implementation of the integrity management in urban gas enterprises.