If Thailand’s GDP was in decrease,the government should be use both policy for help their have a good economics with fiscal policy by expanding spending to pay for taking private business and hire unemployment to have job or cutting taxes to stimulate an ailing economy for make people want to buy the product more and they can use less their money with paying and monetary policy( Expansionary Monetary Policy) will be implemented when the economy is in a recession that is slowing tight liquidity in the system, inflation low and unemployment .The Bank of Thailand will take out measures in such a way that makes money in the system, increased or more expansion such as buy back bonds to adjust the benchmark interest rate (Bank Rate) and other financial mitigation measures, etc. the implementation of measures. It will result in the market interest rate dropped.