Disclosed are a method and a device for measuring a biometric signal by using a radar. The disclosed method measures a plurality of biometric signals by using a radar by: (a) receiving the plurality of biometric signals from the radar； (b) calculating distance information of the received plurality of biometric signals and classifying the same on the basis of a distance； (c) selecting a signal having a largest variance according to a time； (d) further selecting a number of signals among signals having a distance with the signal selected in the step (c) smaller than an arbitrary distance from the distance-based classified signals； (e) converting all signals selected from a time domain to a frequency domain； (f) calculating a reliability of each biometric signal from the converted distance-based signals； and (g) detecting a corresponding biometric signal by selecting the distance-based signal where the calculated reliability is highest.
