A method, an apparatus, and a system for enhancing application reliability of a script-based service are disclosed. The method includes: analyzing data source information of a script-based service; obtaining current state information of the data source of the script-based service according to the analysis result; and judging the availability state of the script-based service according to the obtained current state information. With the technical solution of the present invention, a related analysis function is added to a script-based service server to analyze related data source information in the script-based service logic and mark the script-based service. In this way, a user can know the state of the script-based service when requesting a service, thus avoiding unnecessary service trials, saving system resources, and improving the user experience.