A smart bracelet (100) is provided. The smart bracelet (100) has a length direction, and includes: a first pulse detector (12) and a blood flow sensor (11) sequentially arranged along the length direction, wherein, the blood flow sensor (11) is configured for identifying a blood flow direction and sending a blood flow direction signal； the first pulse detector (12) is configured for detecting a pulse signal. The smart bracelet (100) can intelligently detect whether it is worn on a left hand or a right hand and avoid manually input.
