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Due to the current intersection state identification exits some problems, such as high confused equipment installation, low accuracy rate easily affect by the circumstance, sensitive parameters are difficult to obtain, and so on. Traffic congestion identification design based on vehicle electronic tag data is proposed. Take two phase single intersection as an example, select the traffic flow, traffic density, parking number as parameters for traffic. The simulation environment is built by VISSIM with secondary development. By comparing the simulation results with the analysis of the results obtained from the experts, the degree of similarity is higher than 90%.It is proved that this method can effectively distinguish the intersection state.