Abstract: The intelligent detection control system is the core technology of intelligent detection equipment. In today's intelligent detection equipment control system, the combination of PC+PLC is increasingly used to build the entire control system; and how to ensure the accuracy and reliability of information matching during the information exchanging process between PC and PLC processing center is the key technical problem of the entire intelligent detection equipment control system. Based on the structure and principle of the PC+PLC based intelligent detection system, through design and analysis of the process setting and the control program, the matched information combination is obtained by identifying the material identity information and combining the data queue processing method; and the information group is taken as the unit of transmission during the communication so as to solve the problem of information dislocation. The reliability of this method is verified by the practical application of intelligent detection equipment in different application scenarios.