Abstract: In order to fully grasp the carbon stock, carbon density and its geographical distribution law in Chuxiong State, the database of "uxiong State Forest Resources Situation in 2021" was used as the basic data, and the calculation method of total forest biomass in the biomass equation method was in combination with the carbon content of different tree species to calculate the carbon stock and carbon density of Chuxiong State forest, and the carbon stock and carbon density were analyzed from dimensions such as forest type, forest land ownership, forest origin and forest age group. The results show that: the carbon stock of Chuxiong State forest is 5907354 t, the average carbon density is 29.20 t/hm². The carbon stock of arbor forest is 5652958 t, accounting for 95.48% of the total carbon stock in the state; the collective forest has a larger carbon stock than the state-owned, but the carbon density is less than the state-owned forest; the natural forest carbon stock is 41364150 t, accounting for 6986% of the total carbon stock in the state, of which the natural arbor forest carbon stock is 39743636 t, accounting for 6.13% of the total carbon stock in the state, and the natural forest carbon stock and carbon density are both greater than the artificial forest; the carbon stock of arbor and oak forest are the highest, reaching 50426571 t, accounting for 85.17% of the total carbon stock in the state Chuxiong State forest vegetation carbon stock and carbon density both show a higher trend in the south and northwest, and a lower trend in the central and northeast, the distribution of stock and carbon density is unbalanced, the maximum carbon stock is 9.3 times of the minimum county Yuanmou, and the maximum carbon density is 2.3 times of the minimum county Yuanmou. This paper provides scientific and technological support and decision-making basis for Chuxiong State to achieve carbon peak and carbon neutralization. A comprehensive understanding of the carbon stock, carbon density and its distribution characteristics in Chuxiong State provides a scientific basis for improving the carbon sink capacity of forest vegetation, achieving peak and carbon neutralization, and developing and utilizing carbon sink resources.