Using Landsat 8 surface reflectance data and the SNOMAP algorithm to prepare a reference dataset for FSC, this dataset is used as the true value of the training sample area FSC, in order to establish a linear regression model between the training sample area FSC and the snow cover index NDSI based on MODIS surface reflectance products. By 2021, 30 meters were obtained × The 30m China Pakistan Economic Corridor Snow Distribution Dataset is a GRD raster data type. The data volume is 5.95 MB.