The invention provides a 2000 surveying datum frame unification method and device and a computer readable storage medium. The method comprises the following steps: establishing a CORS (Continuously Operating Reference Stations) base station major network of a target city and an equivalent precision CORS base station extended network; performing compensating computation on the CORS base station major network, the equivalent precision CORS base station extended network, a first control network, a second control network and a third control network respectively in a starting point transfer mannerby taking a base station of a provincial CORS system as a starting point, and obtaining CGCS 2000 geodetic coordinates, 1980 Xi'an coordinates and 2000 coordinates corresponding to base stations of the CORS base station major network, the equivalent precision CORS base station extended network, the first control network, the second control network and the third control network. According to the method, the datum frame is surveyed in a unified manner by taking the CORS system as datum, and dynamic maintenance and update of 2000 geodetic coordinates of the target city can be realized. Meanwhile,information sharing of the coordinate system can be realized, and convenience is brought to city management and city construction.