The present paper examines the role of the mix of fiscal and monetary policy rules in determining inflation dynamics using fiscal and monetary policy reaction functions and Markov-switching vector autoregression methods based on quarterly data in the period 1992-2007.Our results show that fiscal and monetary policies in China can be adequately described using some simple rules,and that significant regime shifts took place around 1998.Fiscal policy tended to be active and countercyclical in the pre-1998 period,then switched to be passive and more countercyclical,whereas monetary policy was characterized as passive and procyclical in the pre-1998 period,and switched to be active and countercyclical afterwards.The mix of fiscal and monetary policy rules can explain inflation dynamics better than the monetary policy rule alone.Therefore,price stability requires not only appropriate monetary policy but also appropriate fiscal policy. The present paper examines the role of the mix of fiscal and monetary policy rules in determining inflation dynamics using fiscal and monetary policy reaction functions and Markov-switching vector autoregression methods based on quarterly data in the period 1992-2007.Our results show that fiscal and monetary policies in China can be adequately described using some simple rules, and that significant mechanism shifts took place around 1998. Fiscal policy tended to be active and countercyclical in the pre-1998 period, then switched to be passive and more countercyclical, yet monetary policy was characterized as passive and procyclical in the pre-1998 period, and switched to be active and countercyclical afterwards. The mix of fiscal and monetary policy rules can explain inflation dynamics better than the monetary policy rule alone. Beforefore, price stability requires not only appropriate monetary policy but also appropriate fiscal policy.