The aim of the present paper is to study the thermal deflection which is built in-edge in a thin hollow disk subjected to the activity of heat source which changes its place on the plate surface with time. The heat source moves along the circular trajectory round centre of the plate with constant angular velocity. The governing heat conduction equation has been solved by using integral transform technique. The results are obtained in the series form in terms of Bessel’s function. As a special case the metallic plate has been considered and the results for thermal deflection have been computed numerically and are illustrated graphically.