An application infa operating system (AIOS) is provided. The AIOS provides an operating platform for integrating, embedding, managing and controlling an application program, wherein a main function thereof is to integrate different application programs which are developed from different information companies and different program designers via different developing languages and tools (e.g., C, C++, database, or Java, etc.) for mutually conversing and swapping data at different space-times through the integration of the present invention, so as to benefit an update, an upgrade and an integration of the application programs, shorten a developing time of integrating a new and a old systems, and save a cost of developing a system for improving a re-use rate of the application programs. The present invention provides a man machine interface (MMI) and a tool software for overall controlling the application program, effectively controlling a system efficiency, and enhancing a stability of the application program system.