The invention relates to an intersection short-lane queue overflow identification method based on electric police data. The intersection short-lane queue overflow identification method based on the electric police data comprises the steps of: (1), obtaining the electric police data, and calculating the departure time headway of a vehicle; (2), in combination with the timestamp information that thevehicle passes through a parking line and the departure time headway obtained by calculation, describing double characteristics of proximity spacing and time headway fluctuation, so that a departuretime headway sequence variation point is identified, and estimating the vehicle queue length on each lane; and (3), analyzing a possible queue overflow type of an intersection in a condition that a left-turn short lane and an adjacent straight lane are different in queue length; and furthermore, performing subdivision by judging whether driving of a vehicle on an adjacent lane is blocked or not. The queue length of each lane is obtained by calculation based on a variable point analyzing theory; under different phase release rules, queue overflow identification algorithms based on rules are respectively established; therefore, queue overflow states in different types can be identified; and the intersection short-lane queue overflow identification method based on the electric police data inthe invention has the advantages of being definite in queue overflow classification, little in input data, wide in applicability and the like.