In order to study the land price changes and influencing factors around the capital and Xiong'an New Area,makes an analysis of the average selling unit price of state-owned construction land in 26 counties (cities and districts) around the capital and Xiong’an New Area, and based on the Standard Deviation Ellipse Method, also analyzes the law and spacial differences of land price change. The evaluation factors include internal factors of land transfer such as the total transfer amount and transfer structure, and external factors of regional economic and social development such as population density, GDP per capita, urbanization rate and policy effect. The Grey Relation Method is adopted to study their influence on land price. The results show that the two internal factors of total transfer amount and transfer structure have a relatively minor influence on the unit price of land transfer, while the external factors have great influence on the unit price of land transfer, especially the policy effect and urbanization rate.