The invention discloses a method of high-precision real-time acquisition of a plane coordinate of a moving target, wherein the method comprises the following steps: (1) constructing video monitoring device network according to a moving monitoring range of the moving target; (2) dynamically selecting an optimal video monitoring device combination through a real-time position of the moving target; and (3) obtaining relative position information between the moving target and each video monitoring device in the optimal video monitoring device combination, and calculating to obtain the plane coordinate of the moving target according to the relative position information. Through the use of the video monitoring point information, the monitored moving target is jointly calculated, and position calculation accuracy influence brought by other factors is weakened, so that the plane coordinate of the moving target is obtained, and purposes of high-precision real-time positioning and monitoring of the moving target are achieved.