Abstract: With the August 28, 2012 the new district of Lanzhou officially became the fifth national district, the land market of Lanzhou is also much outside attention. As land prices in the land market in the act as‘wind vane’role, preparation of Lanzhou City land price index is also very important. This article based on the land market in Lanzhou City Lanzhou individual transactions to build land price index system, on the basis of urban land price dynamic monitoring system, according to the establishment of land price monitoring points of land price, using the weighted average method to calculate the average price of land price monitoring sites, land price index, and then on the basis of the average land price calculation. The results showed that: land prices in 2009 as a benchmark land price, this paper studies 2010-2012, Lanzhou City land price index and changes of the situation. Lanzhou City from 2010 to 2012 all kinds of use land prices rose steadily throughout the 2013 years of Lanzhou city land price index had a substantial growth.