Abstract: In order to consider the allocation of land resource scientifically and make a comprehensive evaluation of the impact of land use, the authors built the land use performance evaluation index system of mountainous city from three aspects of land natural attributes, land use structure and land use benefits, and the evaluation model was built by the method of fuzzy synthetic evaluation method, Nanchuan District of Chongqing City was taken as an example and obstacle degree analysis was conducted according to the results, the existing problems in land use and suggestions were pointed out. The results showed that (1) the land use performance of Nanchuan City showed a rising trend during 2009 to 2013, intensive land use and land use benefits played important roles, the restraining effect of natural condition on the improving of land use performance increased; the land use in Nanchuan City should pay attention to enhancing the efficiency and benefits of land use, to coordinate the development with environment; (2) land use performance evaluation of mountainous area should consider the general characteristics of urban land use, but the particularity should also be noted, particularly the natural conditions of land.