A real-time multi-task scheduling method and apparatus for dynamically scheduling a plurality of tasks in the computing system are disclosed. In the method, a processor of the computing system determines that laxity correction should be performed for a currently scheduled task, and then acquires a remaining execution time of the currently scheduled task according to an execution progress of the currently scheduled task and a time for which the currently scheduled task has been executed. After acquiring a laxity of the currently scheduled task according to the remaining execution time of the currently scheduled task and a deadline of the currently scheduled task, the processor determines a priority of the currently scheduled task according to the laxity of the currently scheduled task, and re-determines a priority queue according to the priority of the task. Then, the processor scheduling the plurality of tasks according to the re-determined priority queue.