This paper studied the vibration and noise of a silver-based alloy excited by sliding-friction. The vibration and noise was tested, and spectrum analysis was adopted to process the signals. The metallographic analysis showed that the graphite particles were not distributed uniformly around the silver base, which decreased the lubrication effect of the graphite and then resulted in a higher level of vibration and noise. A method to decrease the vibration and noise by changing the alloy components and improving the procedure of manufacture was used, and the noise decreased from 70.8 dB to 63．4dB．