An efficient evaporative condenser aims at improving the evaporation efficiency effectively and enabling heat exchange equipment to be more efficient and energy saving. The efficient evaporative condenser comprises evaporation condensing plates arranged in a machine frame in parallel at intervals. A periodical gravity water distribution device is arranged above the evaporation condensing plates and comprises water distribution units arranged for front and back plate surfaces of all the evaporation condensing plates, and all the water distribution units are connected with a water channel system.