The invention provides a WEB service adaptation system based on a local agent. The system comprises an adaptation control unit (100), a local agent unit (200), a service data parsing unit (300) and aservice presentation unit (400); the adaptation control unit (100) is used for respectively sending task information to the local agent unit (200), the service data parsing unit (300) and the servicepresentation unit (400) and receiving an execution return result; the local agent unit (200) is used for acquiring original WEB service data and executing response information of a cross-domain network request, pre-processing the original WEB service data and the response information, protecting and managing Cookie information, and completing personalized interaction of a WEB service user; the service data parsing unit (300) is used for parsing the response information, parsing related metadata related to an accessed page, and returning the related metadata to the adaptation control unit (100); and the service presentation unit (400) is used for rendering and presenting the related metadata to intelligent terminal equipment.