Smart bracelet and control method thereof

The invention discloses a smart bracelet and a control method thereof, and belongs to the field of wearable equipment. The smart bracelet comprises a bracelet; a projection lens, which is arranged at the axial first end of the bracelet and is used for carrying out projection display on the content to be displayed; a distance measuring sensor, which is arranged at the axial first end of the bracelet and used for detecting a shielding object and obtaining the distance between the shielding object and the distance measuring sensor; and a control unit, which is arranged on the bracelet, is connected with the projection lens and the distance measuring sensor, and is used for adjusting the size of a projection interface projected by the projection lens according to the distance to the shielding object detected by the distance measuring sensor. The problems that in the prior art, projection of an intelligent bracelet can only be adjusted through keys, the bracelet is not smart enough, and user experience is poor are