嵌入式系统对强大实时处理能力的需求和相对紧张的内存及内核资源的现实，对嵌入式操作系统任务调度提出了较高的要求。因此任务调度的算法的分析，实现和优化，对实现嵌入式系统的实时性有着重大的意义。从算法提出的理论基础出发，深入分析了经典的单调速率调度算法的思想，特点，具体实现并重点评价了该算法的优点和局限性。-Strong demand for real-time embedded systems processing power and memory, and the reality of a relatively tight core resources of the embedded operating system task scheduling raised higher requirements. Therefore, task scheduling algorithm analysis, implementation and optimization of real-time embedded systems has important significance. From the theoretical basis of the algorithm proposed by this paper analyzes the classic idea of ​ ​ rate monotonic scheduling algorithm, characteristics, implementation and　uation of the advantages and limitations of the focus of the algorithm.