房地产泡沫形成的直接原因是过度投机、地价飞涨,心理预期、非理性扩张、政策导向、结构性矛盾等因素则间接促进了泡沫的形成。对于泡沫程度的评估,一般采用收益还原法、数据比较法、市场修正法,其中,市场修正法是较为准确、合理的方法。 The direct reason for the formation of the real estate bubble is excessive speculation, soaring land prices, psychological expectations, irrational expansion, policy orientation and structural contradictions indirectly promote the formation of the bubble. For the assessment of the degree of foam, generally use the income reduction method, data comparison method, market correction method, of which the market correction method is a more accurate and reasonable method.