We examine whether liquidity is an important price factor in corporate bond market in Taiwan. Using transaction data between January 2006 and December 2010 from GreTai Security market, we analyze liquidity components of corporate bond spreads using a variety of liquidity proxies. We find that turnover and price dispersion measure are the most two effective proxies to measure the corporate bond liquidity in Taiwan, and liquidity measures have more explanatory power than trading activity variables. We also conclude that impact of liquidity is significantly larger in times of crisis, and for financial bonds.