Subway communication device

The invention discloses a subway communication device, which comprises a vehicle body shell, wherein a movable door is slidably connected to the vehicle body shell, a rectangular cavity is formed in the vehicle body shell, first mounting cavities are formed in the upper side wall and the lower side wall of the rectangular cavity, and limiting columns are fixedly connected into the first mounting cavities located in the upper side wall of the rectangular cavity. When the movable door is closed, air compression is generated through a corrugated air bag to serve as driving force, a conductive coil is driven to rotate, induced current is generated, magnetism is generated after current enters an electromagnet to attract magnetic sheets, it is normal when a driver sees that all the magnetic sheets are attracted to the electromagnet, starting cannot be performed when one of the magnetic sheets is not attracted, the compartment with the problem can be known through a corresponding label, and an interphone is used for