Geothermal resource has the advantages of stable heat supply, low cost and high efficiency, the exploration is vital for sustainable energy development, offering an eco-friendly alternative to conventional energy sources. In Zhuhai, geothermal energy is not yet well exploited, and is difficult to be detected by traditional field investigations. Areas with geothermal potential requirs the development of new, robust, and reliable models for detection. Land Surface Temperature (LST) is an important indicators of geothermal resources. In this study, remote sensing date based on Landsat8 OLI was used to invert the LST, coupled with the interpretation of a combination of an active fault zone characteristics. Combined with the obtained geological hot spring data, character of geothermal activity is analyzed. The results show that the application of infrared remote sensing in identifying geothermal resources is useful, and offers significant advantages over traditional exploration techniques, including reduced environmental impact and exploration costs.