Abstract:Through collecting and arranging residential price information material of Weifang city, by using spacial analysis method of geological information system and visifire plugin, probability graph of residential prices have been drewn, distribution law of the price of residential in space has been revealed, and the internal mechanism of the formation has been analyzed as well. It is regarded that impact factors of patial pattern of housing prices in Weifang city are geographical factors, the market supply and demand factors, transport factors, and environmental factors.