This research explores the impact of actual price registration,luxury tax and joint tax for the real estate markets,We use the methodology of event study to examine the effect this policy for the Taichung’s housing market. The results show that actual price registration, luxury tax and joint tax only produces remarkable influence for the price, It is reduced that the class certificate .The policy dose not effectively lower the housing prices,in actuality, the luxury tax policy caused an atrophied real estate market.