Embodiments of the present invention provide a smart wearable device, wherein the smart wearable device includes a detection device and a case, and the detection device specifically includes a set of measurement units and a plurality of light emission units, and includes a set of measurement units. The unit and the plurality of sets of light emitting units are fitted in the case and arranged in a polygon, and each of the plurality of sets of light emitting units and one set of measuring units each occupy one of a plurality of corners of the polygon. However, the center position of the polygon is at a distance specified for each corner of the polygon. Specific embodiments of the present invention provide a smart wearable device. One set of measurement units and multiple sets of light-emitting units are arranged in a case and arranged in a polygon. Thereby, in order to increase the modulation degree of the detection result of the measurement unit, the distance between one set of measurement units and a plurality of sets of light emitting units of the smart wearable device increases. In addition, the center position of the case remains free to accommodate another device.
