This paper examines how various monetary policy signals such as official discount rate changes¡Bspeeches and monetary aggregate M2 annual growth rate affect the structure of interest rates in Taiwan. The model of the thesis is based on the Svensson model (1994) which is the extension of the parsimonious model defined by Nelson and Siegel (1987). It is being shown, that the term of interest rates, estimated based on Svensson model result in a fault value for Taiwan, due to a unsound bond market especially in the short term and one-year interest rates. There is no proof that unexpected movements in the short end of the yield curve are mainly driven by unexpected changes in the official discount rate. Speeches are found to be a more important determinant for the longer end of the term structure. The conclusion is that central bank communication is an essential part of the conduct of monetary policy.