Forest Fire has serious economic implications: destruction of habitats, forest damage, costs of fire fighting and so on. Nowadays it is very important and sensitive issue in Russia and Southeast Asian region since a large scale fire occurs frequently. A huge amount of exhaustion of carbon dioxide by the forest fires thought to be a cause of global warming. A wide range monitoring by remote sensing satellite is indispensable for the grasp of the fire occurrence situation. The Advanced Very High Resolution Radiometer (AVHRR) flown on the NOAA satellite series is one of the best systems for fire monitoring due to the combination of a very good temporal resolution of several images a day. The forest fire analysis using this weather satellite NOAA has been done by various researchers. However a lot of problems have been left and existing fire detection methods are insufficient. Moreover, a real time fire detection method is necessary for early warning and early detection of fire for fire fighting. In this work a new fire detection method using NOAA AVHRR images have been constructed.