Four kinds of modified copper surfaces Were obtained with ion-implantation technique. Fine dropwise condensation of steam could be obtained on these surfaces. The effect of steam temperature on dropwise condensation was studied experimentally. The results indicated that the heat transfer coefficient of dropwise condensation increased with the increase of steam temperature near atmospheric pressure. The properties of the condensing surface strongly affect the heat transfer of dropwise condensation. A discussion on the results was given from drop nucleation theory and surface energy effects.