BootLoader is one of the key technologies in embedded system development,and is mainly used for establishing operating sys-tem environment.To address the problem of BootLoader in seriously relying on the hardware implementation,in this paper we propose a Boot-Loader design method which is based on “NAND Flash +TFTP”storage download mode,and verify this BootLoader by an experiment with OK6410 development board.Experimental result shows that the newly designed BootLoader operates good and stably.The design method can be widely applied to embedded system and other processors.%引导加载程序（BootLoader）是嵌入式系统开发的关键技术之一，主要用于建立操作系统的运行环境。针对 BootLoader 严重依赖于硬件实现的问题，提出一种基于“NAND Flash ＋TFTP”存储下载方式的 BootLoader 设计方法，并采用 OK6410开发板对该BootLoader 进行实验验证。实验结果表明该 BootLoader 运行良好且稳定。该设计方法可以广泛地应用到嵌入式系统和其他的处理器中。
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