Antitheft door frame with sealing slot surrounding its frame

The utility model discloses an anti-theft safety door frame whose periphery is provided with full-length sealing slots, and the anti-theft safety door frame has good sealing performances, such as the sound insulation, the heat insulation and the fire prevention. The utility model is characterized in that a tubular flame-proof elastic-sealing element in the slot is fixedly provided with a steel-plate door frame whose periphery is provided with full-length square slots through the aging-resistant adhesive which can not combust easily and can not generate the harmful gas. When a door leave is closed, the sealing element is pressed by the door leave, the sealing element is attached tightly on the door leave by the elastic deformation, and the fit clearance of the door leaf and the door frame in the closing state is eliminated completely. The utility model has the functions of the sound insulation, the heat insulation and the fire prevention, and can be used widely for industries and civil architectures.