Magnetic fluids show characteristics like conventional fluids when magnetic force does not work externally, but shows the characteristics of magnetic bodies when magnetic force works. Magnetic fluid is applied to industry according to these characteristics. In this research, an experimental study on thermal transfer characteristics of magnetic fluid with the changes of temperature and magnetic intensity was conducted. Magnetic fluid was placed in the tray and heated to the cartridge heater with the magnet was placed on the outside. The heat transfer characteristics of the magnetic fluid due to the change of temperature and magnetic intensity were visualized using a thermal imaging camera.