We exam the linkage relationship and spillover effect among Taiwan Weighted Stock Index, U.S. Dow Jones Industrial Average and Shanghai Composite Index. Empirical evidence supports that U.S. Dow Jones Industrial Average leaded to Taiwan Weighted Stock Index and Shanghai Composite Index. However, there is no causality relationship between Taiwan Weighted Stock Index and Shanghai Composite Index. Finally, based on GARCH analysis, Taiwan's Weighted Price Index showed continued volatility.