1. A pluggable service delivery platform for supporting many devices to many services e-business application, characterized by comprising: a device-platform interface, for accepting requests issued by devices, transforming into XML and then sending to platform kernel section, and transforming the XML representation of information which is returned by the platform into a representation mode which is adapted for various devices for displaying, said device-platform interface comprising: (1) common transforming section, for transforming various information representation mode; (2) special sections for various devices, the information via processing of said special sections and directing to the platform is XML files which can be transmitted via HTTP protocol; a service-platform interface, for abstracting the common requirements of various services as the common base, providing a adapter for each kind of service, the information via processing of said service-platform interface and directing to the platform is XML files which can be transmitted via HTTP protocol; and a platform kernel section, for managing user/device/service information, providing synchronized/asynchronized service engine and the interfaces with other modules, and transferring the information among the modules and between services and devices.