The invention discloses a parallel peak evaporative condenser and is used for solving the problem that tube bundles of the existing refrigerating system do not have large on-way resistance and are not suitable for cooling a turbine with large specific volume. The parallel peak evaporative condenser comprises a low-pressure turbine cylinder (14) and an air cooling island (16), wherein a low pressure cylinder steam discharge pipe (15) is arranged between the low-pressure turbine cylinder (14) and an air cooling island (16) and is communicated with a cooling unit (17), a condensation water tank (18) and a condensation pump (19); the cooling unit (17) comprises tube bundles and steam-water separating chambers, a segment-C reverse flow segment tube bundle (8) is communicated between an upper closed space (10) and the central steam-water separating chamber (7), the upper closed space (10) is arranged between the segment A and the segment B of a steam-water separating chamber (4), a segment-B downstream segment tube bundle (5) is communicated between a lower closed space and the central steam-water separating chamber (7), the lower closed space is arranged between the segment A and the segment B of the steam-water separating chamber (4), and a segment-A downstream segment tube bundle (3) is arranged between a segment-A steam inlet chamber (2) and the lower closed space between the segment A and the segment B of the steam-water separating chamber (4). Therefore, the security and economy of a condenser unit can be improved.