The invention discloses an intelligent mounting system for electric energy measuring instruments. Test meter supports, mounting state indicator lamps and mounting vertical columns are arranged on a verification table, wherein the mounting vertical columns are used for mounting the electric energy measuring instruments. A transfer table is provided with a transfer tray for containing the electric energy measuring instruments. One end of a mechanical arm is installed on the transfer table, the other end of the mechanical arm is connected with an end executor for grabbing the electric energy measuring instruments, and a camera is installed on the end executor. The camera is connected with a master controller through an image processing system. The invention further discloses an intelligent mounting detection method for the electric energy measuring instruments. Through the change of mounting plane positions in different observation directions and normal vectors of the positions, combined with the pose change of the end executor in the corresponding direction, the hand-eye coupling relationship of the end executor is determined; secondary errors generated in the mounting process can be corrected by recognizing linear combinations of mounting points and the rotation relationship between mounting surfaces, dependence on a calibration target and a precision measuring instrument is avoided, and high mounting accuracy and industrial field operability are achieved.