Abstract: To study the impact of urban development and construction on the change of habitat quality and provide scientific basis for urban ecological construction. Based on the land use data of Chengdu City from 2000 to 2020 and InVEST model, the habitat quality was caculated, and the caculation results were analyzed from the spatial and temporal dimensions. The results show that T-o study the impact of urban development and construction on the change of habitat quality, and to pro-vide scientific basis for urban ecological construction. This study was based on the land use data of Ch-engdu City from 2000 to 2020, and the habitat quality was measured based on the InVEST model, and the results were analyzed and studied in two spatial and temporal dimensions. The results showed that: (1) Chengdu had the highest proportion of cultivated land application types, and the construction land in Chengdu had been expanding continuously in the past 20 years, and the largest source of land transferred construction land was cultivated land. (2) The average value of habitat quality in Chengdu was about 0.38, which was close to the "general" grade, and the overall habitat quality showed the phenomenon of high in the two mountains and low in the center, which was due to the higher altitude and and higher vegetation cover of the two mountains and was less affected by human impacts. The central region was the urban development area, and the continuous construction area had great impacts on the habitat quality, so its habitat quality was low. (3) The overall habitat quality in Chengdu showed a decreasing trend, but the decreasing trend slowed down in the last ten years. From 2000 to 2010, the degraded areas of habitat quality were mainly concentrated in the central part of the city, and the urban expansion and the increase of construction land were the important reasons for the degraded areas of habitat quality in the central part of Chengdu. From 2010 to 2020, the degraded areas of habitat quality in Chengdu was decreased while the improved areas was increased, and the improved areas of habitat quality were mainly concentrated in Longquanshan Forest Park. The results indicate that although the urban development has damaged the habitat quality of Chengdu to a certain extent, the decline trend of habitat quality in the past ten years has slowed down, which indicates that the ecological construction in the past ten years has achieved initial effectives.