There are roughly three reasons: 3 1, and the stock price is seriously too high due to the speculation of its reorganization in the early stage (2.57 yuan at the end of 2008 and 610/2% at the end of 2009). 2. At the end of 2009, the state began to regulate the real estate policy, wave after wave, which had a serious impact on the real estate industry. )。 3. Under the inflationary pressure and the amplification effect of stock index futures, the market has changed from a low small oscillation to a deep plunge (2 1 trading day decline 14.83%, with the largest decline of 22. 17%).