We develop a new Keynesian model featuring a dual-pillar monetary policy. We employ this framework to analyze the effects of coordinating macro-prudential rule and monetary policy in China using different tools. The simulation results show that: (1) adopting macro-prudential rule and monetary policy simultaneously can achieve a more stable economic environment than using monetary policy alone; (2) a price-based monetary policy is more effective in stabilizing economic fluctuations than a quantity-based monetary policy when considering the macro-prudential policy; (3) the combination of quantity-based monetary policy and macro-prudential rule can stabilize housing prices and credit growth better than the price-based tools. The study shows that when house prices rise rapidly owing to external shocks, adopting the quantity-based policy instruments and macro-prudential policy is a wise choice. When the financial condition is stable, the combination of price-based instruments and macro-prudential rule is better.

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