Fireproof door

The utility model belongs to the technical field of fireproof doors, and particularly relates to a fireproof door. Comprising a door frame on which a fireproof door body is hinged; the door closer is arranged on the fireproof door body; the support is arranged on the door frame; the telescopic rocker arm is movably arranged on the support; the connecting rod is hinged to the telescopic rocker arm, and the connecting rod is matched with the door closer; the smoke detector is used for detecting a fire alarm; the control system is used for monitoring a fire alarm and the position of the fireproof door body, and when the smoke detector detects a fire alarm signal, the fireproof door body is controlled to be closed; the protection assembly is arranged on the door frame and used for preventing the fireproof door body from being damaged due to collision with the door frame; the protection assembly comprises a convex edge arranged on the rear side of the door frame and arranged in the length direction of the fireproo