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According to the shortages of manual confirming information and manual sealing, an automatic boarding pass sealing control system based on microcomputer was designed to improve the work efficiency and the confirmation process. The designed system consists of boarding pass information collecting module, ID card information collecting and boarding pass sealing module. The scanning gun gets code parameters from the boarding pass. ID card reader collects ID information parameters, and the computer checks the information and takes photograph at the same time. Computer outputs action signal to chip microcomputer through the USB interface. Chip microcomputer sends a rotation parameter to step motor, and the step motor work with the electromagnet to complete the action of stamping for the verification of the information. The experiment results show that the designed system works reliably, and it costs only four seconds to seal well. It can meet the actual demand of airport boarding automatic sealing well.