The invention mainly discloses an exhausted steam absorber. According to the technical scheme, the exhausted steam absorber comprises a water storage tank, a main body, a steam inlet, a recycling opening, a steam extracting opening, a condensation water outlet and cooling water inlets. The steam inlet is located in the left side of the main body. The recycling opening is located in the right side of the main body. The steam extracting opening is located in the upper end of the main body. The condensation water outlet is located in the lower end of the main body. The cooling water inlets comprise the first inlet, the second inlet, the third inlet and the fourth inlet which are each provided with a valve and a cooling water spray head. A filling layer is arranged in the position, below the cooling water spray heads, of the interior of the main body. The recycling opening is provided with a recycling pipe and a recycling spray head which is located below the first filling layer body. The exhausted steam absorber is simple in structure, good in heat exchange effect, capable of improving the energy-saving effect, convenient to adjust and easy to control and has important demonstration value and application prospects.