Abstract: To solve the insufficiency of real-time performance in the present real-time scheduling algorithm, a new real-time task classification scheduling algorithm is proposed.According to the arrival of real-time tasks are classified, and divided into periodic tasks and non-periodic tasks, and use different improvement real-time scheduling algorithm to schedule different type of real-time task.Experiments show that classification scheduling algorithm is compared with the present real-time scheduling algorithm, has been largely improved for integrated real-time performance.