Growth of economy and urbanization boosts the improvement of real estate with increasing house sales. This paper uses market comparison to evaluate the house values based on Fuzzy mathematics theory, and combined with Xiamens real estate market, analyzes the price difference factors and uncertainty in transaction cases and fuzzy, uses approaching method to set up evaluation model. The results reflects the situation of real estate markets.

Gold enterprises' acquisition and reconstruction prevails recently. This paper presents that the four-environmental issues shall be taken into consideration during expansion, including geological, social, natural and political environments.