The utility model relates to a system is compared to identity information for security check channel, ID card including installing on the channel gate machine is checied the module and is installed in the camera module of channel gate machine one side, the ID card check the module include central processing unit and with special security module of the ministry of public security and the data memory of storage identity card information from the line number certificate that central processing unit connects, central processing unit passing signal line interface channel floodgate machine switch control system, camera module with central processing unit is connected. The utility model provides a current safety inspection check the machine by the handheld ID card of securair staff usually and carry out the problem of testimony of a witness information identification inefficiency through the observation.