Kitchen fire temperature sensing automatic alarm device

The utility model relates to the technical field of detectors, and discloses a kitchen fire temperature sensing automatic alarm device which comprises a detection mechanism and a filtering mechanism. The detection mechanism comprises an electronic constant temperature detector, a critical thermistor CTR, a second electric wire, an alarm controller and a driving assembly; rectangular holes are evenly formed in the surface of the electronic constant temperature detector, and the critical thermistor CTR is fixedly connected to the interior of the electronic constant temperature detector. According to the utility model, the resistance value is slowly reduced through the rise of ambient temperature, so that the signal current is rapidly increased, the detector sends an alarm signal to the alarm controller and transmits the alarm signal to the fire-fighting linkage controller, and the fire-fighting linkage controller starts a corresponding automatic fire-fighting system (facility) to realize a preset fire-fighting