Disclosed is a method for lighting a screen of a smart wristband by raising the hand. The smart wristband includes at least a processor, a display screen, and a three-axis acceleration sensor. The method includes processing and analyzing acquired three-axis acceleration data, and determining a time period and an amplitude of acceleration data of each of an X-axis, a Y-axis and a Z-axis, thereby determining whether a user raises the hand. According to the method, the real thought of a user can be accurately determined, a screen is accurately lighted when the user raises the hand, and the state of a wristband worn on the left hand or the right hand does not need to be reset when the user changes the left hand and the right hand.