This research develops a low cost polymer array sensors. The sensor is composed of conductive polymers, copper foil and silicone. We use resistance characteristics of polymer materials, to measure the vibration of radius artery. This research combines our sensor with hardware circuit, the measured signal for the average, amplification, filtering and other processing to develop an non-invasive measuring system. In time-domain, we can analyze the pulse to know the strength and frequency. In frequency-domain, we use FFT (Fast Fourier Transform) to find the first ten harmonic waves and estimate for the health according to the harmonic waves.