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1. A smart flashlight, comprising a body component, a light head component, a light tail component and a battery component, the light head component being arranged at a top end of the body component, the light tail component being arranged at a tail end of the body component, and the battery component being arranged in the body component and providing working power for the light tail component and the light head component; further comprising a PCB control board, the PCB control board being provided with a gyro sensor for detecting a swing amplitude and position of the flashlight and an acceleration sensor for detecting a height position and moving status of the flashlight, enabling the PCB control board to automatically control a brightness level and/or switching status of the light head component based on detection information fed back by the gyro sensor and the acceleration sensor; the light tail component is provided with a tail base, a tail side shell and a tail cover, the tail base is connected with the body component, the tail side shell is sleeved on the tail base, the tail cover is sleeved on the tail side shell and forms a chamber with the tail base and the tail side shell, and the PCB control board is installed on the tail base and located in the chamber.
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