This paper focuses on the measurement of distribution of the heat transfer coefficient of the entire wall surface rather than the measurement accuracy at measurement of the heat transfer coeffcient of each panel of the building，and experments were made to smooth surfaces of a small building model（1.1m×1.1m×1.1m）consisting of an SAT meter installed outdoors，to develop the measurement method of the transmiss ion heat flow density and convective heat transfer coefficient of each part of the building based on the measurement results of the SAT meter，infrared radiant energy thermometer，and net pyrradiometer. The thermal image of the wall panel taken by the infrared radiant energy thermometer was divided into 1O cm×10 cm grids，and the heat transfer coefficient was obtained from the heat balance amount of each panel. This method indicates possibillty of measurement of the heat transfer coefficient distribution of the entire wall panel if two or more SAT meters can be installed on the wall of the building where surface roughness is very little and the emissivity is large，though the measurement a㏄uracy of the heat transfer coefficient is rather low．