A biosignal measuring sensor and a biosignal measuring method are provided. The biosignal measuring sensor includes an oscillator, a signal detection unit, and a signal processing unit. The amount of oscillation frequency shift of the oscillator is detected as intensity change of a biosignal, and a pulse signal and a respiration signal are detected from the detected biosignal. In the biosignal measuring sensor and the biosignal measuring method, a biosignal is detected in a manner of non-contact with a biosignal measuring target. Moreover, the biosignal may be detected accurately at a close range.