A method and an apparatus for application synchronization are provided. Therein, a request for synchronizing actions of applications to the kernel space of the operating system is received, action categories of the applications are obtained and an action determination is carried out, according to action parameters of the applications, and results of the action categories and the action determination of the applications are sent to the kernel space, the actions of the applications to be synchronized to the kernel space would be achieved, thereby a basis for processing the task scheduling and system running core number/frequency is provided to the kernel space.