Railway track accurate measurement control network establishing method

The invention relates to the field of railway track accurate measurement, in particular to a railway track accurate measurement control network establishing method, which comprises a step of establishing control points of a basic plane control network (CPI), control points of a line control network (CPII) and control points of a foundation pile control network (CPIII). The control points of the basic plane control network (CPI) are divided into in line control points and off-line control points; the in line control points are arranged in a railway network line; the off-line control points arearranged in the field which has a clear view and around which intense interference sources are absent; the control points of the line control network (CPII) are arranged in the railway network line and are arranged in a diamond shape; and the control points of the foundation pile control network (CPIII) are arranged in two rows by means of peripheral structures. The off-line control points of theCPI are set as temporary p