The accuracy of control points is related to the quality of engineering construction.Due to the poor foundation stability and large ground deformation,the control point displacement problem is prominent in the port engineering.Based on the port engineering case,this paper probes into the plane precision analysis of engineering control points based on BHCORS.The method of coordinate conversion and baseline comparison are used to check the accuracy of the control points,and the BHCORS is used to check the accuracy of out-of-control points.The comparative analysis results show that BHCORS results are characterized by high precision and strong potential,and thus widely used in the port engineering.