Improvement of villages' economies in and around the Yunnan snub-nosed monkey's habitats continues to come at the cost of decreasing ecological quality of the habitats. These areas are rich in natural resources and their biodiversity is among the richest in China. This paper uses the Principal component analysis and InVEST model of GIS spatial analysis to study the impact of villages' economic growth on the habitat quality of the Yunnan Snub-nosed monkey. The analysis included 2,575 villages and 344 sample plots in the monkey's northwest Yunnan habitat. There were 12 groups of monkeys in this study. The results are as follows:(1) The economic development of villages in the south was better than that in the north. (2) The habitat quality in the northern region was higher than that in the southern part. The impact of villages in the north of the Yunnan snub-nosed monkey's habitat quality was smaller than that in the south of the region. The northern habitat rarity was higher than that in the south, necessitating priority protection strategies due to the ecological stability weakening. (3) There were 12 villages in the monkey habitats. Three groups (Groups 3, 6, and 12) had low habitat quality, which affected the development of the villages. Three other groups (Groups 1, 12, and 13) had scarce (fragile bio-diversity) habitats, which needed to be prioritized for protection and repair. Over half the habitat area (52.71%) was low-quality, about one-quarter (20.44%) was medium quality, only about one-quarter (26.85%) was high quality.