Abstract: High mountains and valleys are well developed in Western Sichuan, with high mountains, dense forests and poor topographic geological environment. The forest and grass resources are relatively rich and forest fires are prone and frequent, which result in difficult disaster emergency disposal and heavy prevention and control tasks. The domestic high-resolution satellite images have the advantages of high temporal and spatial resolution, various load types, strong mobility, wide range and rapid imaging, which have obvious advantages in forest fire prevention, disaster emergency disposal, disaster prevention and reduction in Western Sichuan. The “4·08” forest fire in Sanyanlong Town of Jiulong county in Sichuan Province in 2021 was taken as an example, and the domestic high-resolution satellite data were used to carry out emergency response in the initial, middle and late stage of forest fire respectively in this paper, which included the quick interpretation of the forest fire rescue elements (ini-tial stage), perception of abnormal situation of bright temperature (medium stage), tracking and monitoring the dynamics of the burned area (medium stage), providing emergency rescue deployment suggestions (medium stage), interpretation of disaster loss (late stage), and evaluation of susceptibility of post fire debris flow (after fire stage). The results show that domestic high-resolution satellites have important practical guiding significance for the whole process of forest fire emergency disposal.