The utility model relates to a fixed control point device of cooperation laser tracking appearance target ball, it includes the stainless steel base, the stainless steel base adopts the cuboid structure, has a through -hole in the processing of the center of stainless steel base, and tracker target ball has been placed at the top of through -hole, supports that match of the outer disc and the through -hole of tracker target ball, and steel drift and stainless steel base cooperation use, the steel drift passes the through -hole, is provided with the toper structure in the one end of steel drift. This device compares that the target ball seat from the area has low cost, easy operation at random, stability is good, the suitability strong, difficultly characteristics such as destroy, can weld, and the result of use is good, has guaranteed the precision of micro -control net, and the field weld mode of pass through that can be convenient is fixed at the construction field (site), through the miniature measurement control network that a plurality of control points were establish, verifies in reality use to have reached fine effect.