For the limitations of TOPSIS method

this paper makes two improvements.Firstly

it uses sequencing relationship analysis of each index to calculate the weight of the weight in order to avoid the use of objective evaluation result of the importance

Or man—made causes the specified weight of each evaluation index weights the importance of the problem of excessive deviation.Secondly

it uses projection method to avoid the traditional TOPSIS method exists in the program selection process almost from the ideal solution and negative ideal solution programs are also close to the problem.Finally

it apply the method improved to research the forecasting models of real estate

and achieve reasonable results.