Abstract: Forest fire refers to the fire behavior that is not controlled by human beings, spreads freely in forest land, and causes certain damage and loss to forest ecosystem and human beings. The occurrence of forest fire is very sudden, destructive and difficult to deal with. With the gradual maturity and rapid development of remote sensing technology, it has been widely used in forest fire monitoring and disaster assessment due to its high spatial and temporal resolution, wide monitoring range and low cost. It has become an important tool for large-scale forest fire monitoring. In Sichuan area where forest fires occur frequently, a large-scale and high-time resolution forest fire point extraction scheme was proposed by using GF-4 satellite. The threshold of bright and warm fire point suitable for Sichuan area was constructed, and the cloud, water and other influencing factors were eliminated to realize the extraction of fire point in Sichuan. The comprehensive evaluation index of extraction results was above 0.78.