Internal threading type blind hole embedded part group positioning measurement system and measurement method

The invention provides an internal threading type blind hole embedded part group positioning measurement system and measurement method. The system comprises a plurality of connecting devices, a plurality of spherical prisms used for being matched with a total station for measurement and a positioning plate, wherein each connecting device comprises a magnetic pedestal, the bottom of each magnetic pedestal is fixedly provided with a screw rod which is used for being in threaded connection and fixation with a blind hole, the upper surface of each magnetic pedestal is provided with a spherical groove, and the center of the spherical groove of each connecting device, the center of the screw rod and the center of the corresponding blind hole are located on the same straight line; the spherical prisms are adsorbed and fixed in the spherical grooves in a matched manner; and the positioning plate is used for dividing the dispersed blind holes into blind hole module groups, and open holes which are in one-to-one corres