This report is the one of the experimental results of heat transfer on the revolving steam condenser tube, under the conditions : the contained air 0∼30% by weight, and film condensation. The experimental apparatus used is revolving condenser tube which was reported by Professor N. Yamanaka on this Journal, 1937. The results of the present experiment show that on the revolving condenser, not only the coefficients of heat transfer, but the safety for the air effect, are considerably increased.