[Objective] The land use performance and its diagnose obstacle factors were evaluated in order to provide references for ecological civilization construction and land resource management in Guiyang City.[Methods] The land use performance evaluation index system of Guiyang City was constructed from four aspects:land use economic performance, social performance, ecological performance and fair performance. The improved technique for order preference by similarity to an ideal solution(TOPSIS) model and obstacle degree model were used to evaluate the land use situation of Guiyang City from 2006 to 2015. Performance evaluation and obstacle factors were used for diagnosis.[Results] ① The land use performance of Guiyang City showed a steady upward trend in fluctuations, and the performance level improved from poor to high quality. ② The performance of the four criteria levels improved as a whole, but there were differences in growth patterns, among which, social performance and ecological performance have the fastest growth rate,while the economic performance and fair performance have entered the intermediate level relatively late. ③ Economic performance and social performance were two major factors affecting land use performance. ④ From the obstacles of the indicator factor, the main obstacles affecting the land use performance of Guiyang City in the future would be urban per capital disposable income, ecological management area, average employment, house price income ratio and Engels coefficient.[Conclusion] The improved TOPSIS model combined with the obstacle degree model can objectively and truly reflect the change of land use performance and the existing performance obstacles in Guiyang City.