High-precision fire detection structure

The utility model relates to the technical field of fire detection, in particular to a high-precision fire detection structure which comprises a mounting seat, a fire detector is fixedly mounted on the bottom surface of the mounting seat, a detection head is connected to the bottom surface of the fire detector, a plurality of smoke sensing openings are formed in the circumferential surface of the detection head, and a cleaning sleeve is arranged on the outer surface of the detection head. A guide assembly is arranged between the cleaning sleeve and the bottom surface of the fire detector, a plurality of cleaning brushes are fixedly mounted on the inner wall of the cleaning sleeve, and the cleaning brushes are movably connected with the inner wall of an opening of the smoke sensing opening. By arranging the cleaning sleeve capable of moving up and down, the cleaning sleeve can have a cleaning effect on an opening of the smoke sensing opening, the situation that too much dust adheres to affect the fire detectio