The present invention relates to a lighting device with a life pattern and P2P-based fire detection function, and a life pattern and P2P-based fire detection method. The object of the present invention is to provide a lighting device with a life pattern and P2P-based fire detection function capable of generation-to-generation fire alarm in small-scale houses, and a life pattern and P2P-based fire detection method. According to a preferred embodiment of the present invention, the light device comprises: a lighting unit providing illumination in a space in which the lighting unit is provided; a sensing unit detecting smoke concentration; and an MCU determining whether the detected smoke concentration exceeds a predetermined smoke concentration threshold, if so, transmitting a warning to a user′s home, determining whether the smoke exceeding the smoke concentration threshold is a fire smoke or a life smoke, and transmitting a warning to other homes when the smoke is determined as the fire smoke. According to the present invention, the device can enable generation-to-generation fire alarms in a small-scale houses based on a P2P network.
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