本文主要以應用向量自我回歸模型(VAR)為主軸，分析經濟政策不確定性(EPU)指數與總體經濟環境之間的關聯性，並探討台灣經濟政策不確定性指數與其他亞太國家的經濟政策不確定性指數之間的影響。資料期間為台灣2010年6月至2019年12月之月資料。實證結果顯示，台灣經濟政策不確定性指數與亞太國家的指數呈現顯著正相關，中國、南韓及美國為亞太地區前三大對台灣出口不確定性的國家。財政、貨幣、貿易及匯率政策不確定性指數對台灣經濟政策不確定性指數有著0.65-0.85的高相關性，於各個高點確實捕捉到相對應的國際或國內事件。透過VAR的分析，研究結果顯示經濟政策不確定性可以預測台灣經濟表現的變化，經濟政策不確定性的發生的確會對台灣市場造成立即且明顯的衝擊。

This article focuses on the application of vector autoregression model (VAR) as the main topic, analyzes the correlation between the economic policy uncertainty (EPU) index and the overall economic environment, and discusses the impact on uncertainty of Taiwan economic policy uncertainty index and economic policy uncertainty index of other Asian-pacific countries. The data period is from June 2010 to December 2019 in Taiwan. The empirical results show that the Taiwan economic policy uncertainty index is significantly positively correlated with the index of Asian-pacific countries. China, South Korea and the United States are the top three countries in the Asian-pacific region that export uncertainties to Taiwan. The Fiscal, Monetary, Trade and Exchange rate policy uncertainty index have high correlation of 0.65-0.85 to the Taiwan economic policy uncertainty index, and indeed captures the corresponding international or domestic events, which cause the index to the high peak. Through VAR analysis, the research results suggest that economic policy uncertainty can reflect the changes economic performance in Taiwan. The economic policy uncertainty does have an immediate and obvious impact on the Taiwan market.

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