The main purpose of this paper is to study the utilization of wide area (remote) information obtained via synchronized phasor measurement in the design of power system stabilizer. We aim to advance the performance of the conventional power system stabilizer that is designed essentially by using local measurements as input signals. Both the wide area signal from some remote area and the local signal are employed as the input signals for the power system stabilizer installed on the generating unit. The proposed multi-input power system stabilizer is investigated for enhancing the stability of the overall system. Results from applications to a multi-area power system are demonstrated.