The invention discloses a water-saving evaporative condenser. The water-saving evaporative condenser comprises a cooling pipe, a water baffle, a first baffle and a second baffle mechanism, wherein thepart, located in a condenser box, of the cooling pipe is higher than a spraying device; the water baffle, the first baffle and the second baffle mechanism are sequentially arranged from bottom to topin the box and are higher than the cooling pipe; a plurality of S-shaped water collecting pieces are uniformly fixed on the bottom surface of the water baffle, a plurality of first air holes are evenly distributed in the S-shaped water collecting pieces, and first through holes are formed in the left end and the right end of the water baffle respectively; the first baffle is an arc-shaped plate protruding upward from the top, and multiple second air holes are evenly distributed in the first baffle, and correspond to the first through holes from top to bottom one by one; the second baffle mechanism comprises a fixed plate and a movable plate, a plurality of third air holes are uniformly distributed in the movable plate, and are concentric with a mounting hole of the fixed plate, and a rotating shaft is fixed at one end of the movable plate; and the rotating shaft is arranged along the notch of the fixed plate and is connected with the output end of a motor. The water-saving evaporativecondenser has the beneficial effects that the water vapor recovery amount is increased, the water loss is reduced, and the water-saving effect is achieved.