The invention relates to an operating system of an intelligent television. The operating system comprises an application framework layer, an application execution environment layer, a component layer, a hardware abstract layer and a Linux kernel layer, wherein the application framework layer is used for combining and repackaging interfaces and logic of all components of the component layer, so that a reuse mechanism of application to the components of the component layer can be conveniently simplified; the application execution environment layer is used for providing an execution explanation environment of an application code; the component layer comprises a digital television associated component for supporting intelligent television application; each component provides a standard universal component interface for the application framework layer; the Linux kernel layer is used for carrying out progress management and memory management, realizing a network protocol and providing a driving program for a hardware platform of the intelligent television; the hardware abstract layer is used for abstracting a hardware function of the Linux kernel layer, hiding details of hardware interfaces and providing a virtual hardware platform so as to provide a uniform interface for the component layer, and therefore, the operating system has hardware independence and can be transplanted on multiple platforms.