The invention relates to a heat accumulating type cooling tower and an operational control method thereof. Heat accumulating type direct-heat-transfer type heat exchanging is adopted, water gasification does not exist, water evaporation loss is reduced, a circulating water system can be closed, a cooling air inlet can be used for filtering, intrusion of fine dust in the air is reduced, the cooling efficiency of circulating water can be effectively improved, equipment abrasion can be reduced, and the blowdown capacity can be decreased; breeding of bacteria and alga in the circulating water can be effectively reduced, chemical reagents for treating the bacteria and the alga can be saved, consumption is reduced, and pollution is removed; and the water surface evaporative water consumption of a circulating water pool (tank) can be effectively reduced, and the transverse evaporative water consumption, caused by atmospheric motion, of an air duct of the cooling tower can be effectively eliminated.