The value of terrestrial ecosystem carbon sequestration services has been widely recognized. Forests, grasslands and other ecosystems can store large amounts of carbon, which is the key to mitigating global climate change. The eco-environment of the western region of Sichuan Province was greatly destroyed by the earthquake which had occurred in Wenchuan on May 12, 2008. One of the direct impacts is that the landscape was seriously damaged and the disturbed eco-system released a significant amount of carbon dioxide because of sudden changes inland utilization and vegetation cover. Our goal was to use the maps of land use and land cover types and data of carbon reserves stocks in four carbon pools to estimate the amount of carbon stored in a landscape currently and the pre-seismic amount of carbon in the earthquake-hit areas, and then we have got a series of maps which can help us to conduct carbon management. Based on the geographical information system software of ArcGIS, this paper presented the evaluation index system to assess the carbon storage function of the earthquake-hit area, by calculating the density of carbon storage for four carbon pools (aboveground biomass, underground biomass, soil carbon and dead organic matter) in each grid. In addition, this paper also analyzed the spatial pattern of carbon storage function in this area. The results showed that the total carbon storage volume of the earthquake-hit area is 3.97×10⁸ t based on the spatial analysis module of ArcGIS and the average carbon density is 52.2 t/hm². The ecosystem with the highest carbon storage and carbon density is represented by subalpine evergreen coniferous forest. The carbon storage volume increased with the increasing slope gradient and altitude. The carbon storage volume in the area where the slope is greater than 35°is 1.3×10⁸ t, accounts for 33.9% of the total carbon storage volume in the earthquake-hit area. Because of the forests was destroyed by the powerful earthquake, the function of carbon storage presents a suddenly drop sat altitude of 750-1750m. In addition, the impact of earthquakes on the carbon storage is that the carbon stocks lowered primarily owing to vegetation damage, with the overall reduction reaching 9.98×10⁶t. The most severely degraded areas are located in the northern mountains of Pengzhou County and Shifang County, along the southwestward extension of the Longmen Mountain. The recommendations of post-disaster reconstruction, vegetation and carbon management are listed as follows. 1) Expanding the area of forest coverage and improving forest quality is a key point to play an important role in forest carbon storage. 2) The vegetation restoration in the earthquake-hit area is given priority to the natural restoration approach of forest reservation, complementary with artificial approaches, such as artificial reforestation and landslide engineering control measures. The risk of secondary disasters can be decreased while ecosystem carbon storage function of the destroyed area is reconstructed. 3) To enhance the carbon contributions of farmland and grazing land area by pushing no-tillage agriculture, developing ecological agriculture, establishing a series of measures to improve comprehensive utilization (e. g., taking the action of returning straw to the field instead of burning them), and strengthening the carrying capacity control of prairie areas. Our results will help guide the vegetation recovery, carbon management and carbon trading. But most importantly, they can support a series of decisions made by government sat various levels in the earthquake-hit areas.