An apparatus for and method of detecting biological information. The apparatus for detecting biological information includes a supporting member that is attached to an object, a biosignal sensor that is configured to detect biological information of the object and mounted in the supporting member; and a plurality of position sensors configured to detect a position of the apparatus with respect to the object. The position sensors may detect position information of an area of the object where the apparatus is attached. Position data detected by the position sensors may be compared with reference position data.