ARM指令集可以分为6类，即跳转指令、数据处理指令、程序状态寄存器（PSR）传输指令、Load／Store指令、协处理器指令和异常中版产生指令。本文分别对这6种指令和伪指令进行介绍。-ARM instruction set can be divided into six categories, namely, the jump instruction, the data processing instruction, the transfer instruction of the Program Status Register (PSR), the Load/Store instruction, the coprocessor instruction and abnormal version of the instruction. In this paper, these six kinds of instructions and directives are introduced.