This paper respectively introduces common coordinate systems including Beijing 54 coordinate system,Xi＇an 80 coordinate system,and local independent coordinate system etc,describes the different coordinate system conversion steps,analyzes the four-parameter coordination conversion methods and seven-parameter coordination conversion methods,and points out their own application scope,so as to guide practice.%分别介绍了北京54坐标系、西安80坐标系、地方独立坐标系等常见的坐标系,并阐述了不同坐标系相互转换的步骤,分析了四参数坐标转换方法和七参数坐标转换方法的特点,指出了各自的适用范围,以期指导实践。
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