Abstract: To study the impact of urban development and construction on the change of habitat quality and to provide scientific basis for urban ecological construction. Based on the land use data of Chengdu City from 2000 to 2020, this study measured the habitat quality based on the InVEST model, and an-alyzed the results of the measurement in two 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 show that (1) the proportion of land application types of cultivated land is the highest in Chengdu, and the cons-truction land in Chengdu has been expanding in the past 20 years, and the largest source of land trans-ferred to construction land is cultivated land. (2) The average value of habitat quality in Chengdu is a-bout 0.38, which is close to the "general" grade, and the overall habitat quality shows the phenomenon of high in the two mountains and low in the center, which is due to the higher elevation of the two mountains and the high vegetation cover, which is less affected by human impacts; and the central area is the urban development area, and the continuous construction area has great impacts on the quality o-f the habitats, so it has low habitat quality. Habitat quality is low. (3) Habitat quality in Chengdu City shows a decreasing trend in general, but the decreasing trend has slowed down in the last decade. 2000-2010, the degraded areas of habitat quality were mainly concentrated in the central part of the city, and urban expansion and increase in land for construction were the important reasons for the degradation-n of habitat quality in the central part of Chengdu City, and from 2010 to 2020 the degraded areas of habitat quality in Chengdu City will decrease while the improved areas will increase. Longquanshan Forest Park area. This indicates that although urban development has damaged the habitat quality of Ch-engdu to a certain extent, the slowing down of the decline trend of habitat quality in the past ten yea-rs indicates that the ecological construction of the city has been effective in the past ten years.