Abstract: Objective: To address the issue of varying standards among thirdparty entities accessing Xiamen Metro internet ticketing platform, it is necessary to reasonably plan the internet ticketing system for Xiamen Metro and to establish a unified internet ticketing cloud platform. Method: The internet ticketing platform is subjected to a unified planning process. Multienterprise access management mode is added in functionality to enable unified ticket issuance, billing, clearing and thirdparty merchant management functional modules, and the main business processes are designed. The ′dualactive′ mode is adopted on the internet ticking cloud platform, which involves the simultaneous operation of two nodes in the electronic ticketing system. Through means of optimizing network access on internet, improving operationmaintenance resource, and independently deploying data centers, resource data such as database and cache are shared between the two nodes. The security of internet platform is designed, considering aspects such as information security level, the reliability of API (application programming interface) interaction between the cloud platform and the merchant backends, and the implementation of disaster recovery and backup mechanisms. Result & Conclusion: The designed Xiamen Metro Internet Ticketing Cloud Platform: (1) supports the configuration management, merchant business operations, and authorization management of multiple merchant accounts; (2) enables Xiamen Metro fare gate operation with boarding codes and allows thirdparty APP integration while enforcing unified standards and verification rules for generating and validating QR code; (3) has ′dualactive′ mode to enhance the reliability and stability of the Xiamen Urban Rail Transit Internet Electronic Ticketing Platform.