Abstract: 【Purpose/significance】Creating "the Belt and Road" thematic database sharing service guarantee mechanism to enhance da⁃ta sharing level and ensure the quality of database services【. Method/process】Based on the whole process of TQM theory,this paper an⁃alyzes the sharing service of "the Belt and Road" thematic database and build a service guarantee mechanism from four stages of ser⁃vice preparation,development,evaluation,summary and improvement【. Result/conclusion】In the preparation stage,it is necessary to es⁃tablish a guarantee mechanism based on target demand and cooperation; In the development stage,it needs data resources,technical standards.security risk management and other comprehensive guarantee; in the evaluation stage,it needs to find the problems and defi⁃
ciencies of service through user evaluation and feedback and performance evaluation mechanism; in the optimization stage,it needs to comprehensively improve the service level through service optimization and improvement mechanism【. Innovation/limitation】This pa⁃per draws on the TQM theory and systematically analyzes the guarantee mechanism needed in the process of "the Belt and Road" the⁃matic database sharing service.The follow-up research will further strengthen the study of the coordination mechanism between differ⁃ent mechanisms.