Habitat quality determines the status of regional biodiversity which is an important reflection of ecosystem service function and health. Research on the habitat quality change is of great significance for regional ecological security. The reconstruction of regional spatial pattern of habitat quality can restore the background of ecological environment in historical periods and provide scientific support for revealing the evolution law of regional ecological environment quality. This study selected ten driving factors (elevation, slope, aspect, GDP, population, temperature, rainfall, river distance, urban distance and coastline distance) to build CA-Markov model parameters and simulate the historical land use data. The spatial pattern of habitat quality was rebuilt by InVEST model, and the classification and statistics of habitat degradation and habitat quality were examined. The results showed that: (1) The Kappa coefficient is 0.88, which proves that the land use spatial pattern reconstruction method is feasible. On this basis, the simulation of habitat quality is valid. (2) During 1975-2010, the degree of habitat degradation increased gradually and the spatial distribution of it showed a regular pattern of circle layer change. The habitat quality decreased steadily. The high-value areas were mainly distributed in mountainous areas, while the low-value areas were mostly distributed across built-up areas. In this period, the low-value areas gradually engulfed the high-value areas around, and the habitats of the high-value areas tended to be fragmented. (3) In 1975-2010, the spatio-temporal variations of habitat quality indicated that the region with the worst habitat quality were difficult to recover; the regions with the poor habitat quality accounted for 6.40% of the total area, which were prone to deteriorate and occur around the built-up areas; the areas with the best or better habitat quality grades accounted for 5.68% of the total area, which could be easily transformed into the poor and worst habitat grades, making the habitat more scattered. (4) There was a marked change with land use of study areas during 1975-2010, which had a huge impact on the quality of the habitat. The above results show that the habitat quality of the study area decreases gradually. More than 60% of the regions have poor or even worst habitat quality. Construction land is the biggest factor threatening the habitat quality.