Abstract: The double-yin electrical connector is a key component of radar products. The traditional manual assembly method for it is low in efficiency and poor in consistency. By designing an automatic assembly robot system, assembly efficiency and quality can be effectively improved. The detailed control process architecture under the automatic assembly mode is sorted out in this paper according to the process requirements of electrical connector assembly and the structural characteristics of electrical connectors. The precise guidance of assembly position is effectively realized by designing assembly object feature extraction logic and positioning algorithm. And a complete set of automatic assembly control method is obtained through disassembly and analysis of key movement points of robot assembly. The system designed with this method is stable and reliable in practical applications and meets the requirements of military product production and assembly.