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The independent operation of multiple channel gates in urban rail transit makes it difficult to accurately control multiple gates. Therefore, a control method for multiple channel gates in urban rail transit based on an improved SSD algorithm is proposed. According to the application process of the SSD algorithm, prior boxes are generated, and the basic SSD algorithm is improved by jointly optimizing the loss function. The improved SSD algorithm is used to fuse and process gate data, and the layout of the gate equipment array is determined based on the results of the data fusion processing. The passage situation in the gate channel is determined based on the recognition results of the passage target and the sensor equipment, and a sub-program for error motion control is designed according to the passage situation to complete the control of multiple channel gates in urban rail transit. The experimental results show that, under the action of the improved SSD algorithm, the closed state of the gate is always consistent with the current walking direction of pedestrians, and the real-time passage rate is high, which can solve the problem of urban rail transit chaos caused by gate error closure.