The invention discloses a method for constructing a unified and comprehensive management platform of an application. The method comprises the following steps of combining Struct2, Spring and ibatis to form a J2EE framework; and migrating/transforming based on a standard application, wherein the standard application is divided into a three-layer structure, a presentation layer is used for combining all elements into a mode required by a service user according to the demands of different applications, an application logic layer is used for checking application permission and sorting test points, and a bottom layer is used for providing universal model inquiry service and real-time/historical data inquiry service. With the method, the migration of main applications and data on a conventional proportional integral (PI) platform is fulfilled, and a real-time/historical application development mode is improved; a standard application development mode under a unified development framework is explored, experiences are provided for expanding an application migration/development range in future, and convenience is provided for high-efficiency operation and maintenance; and a unified management mode of the real-time/historical application is explored, and the unified management of the application is achieved by the unified application management platform.