Two reasons will make “Paulson Effect” which was from the time of reform of RMB exchange rate system persistent in the Obama era. One reason is the basic configuration and development trend of China’s economy remaining unchanged；the other is，in order to in turning from crisis to recover，America needs the cooperation with China. But this financial tsunami has made “Paulson Effect” a great discount. Because of three China’s economy firewalls，the financial tsunami influences China’s economy mainly from real economy to financial institutions step by step. If we focus on the relationship between the “Paulson Effect” and China’s real-estate prices in 2007 and 2008，we can find that China’s real-estate development presents a kind of mixed blessing status—opportunities coexisting with pressures. If we can draw lessons from those passed financial turmoil，meanwhile make great efforts to cultivate Rent-Control System suitable for market operation，these will benefit for China’s Real-estate Development in the long run.