Abstract: Provided is a multi-stage plate-type evaporation absorption refrigerating device, including components such as a refrigerant water evaporator, a condensed water level gauge, a four-path solution heat exchanger, a vapor mixing tank, a first plate-type inner-coupling phase-changing heat exchanger, a second plate-type inner-coupling phase-changing heat exchanger, a third plate-type inner-coupling phase-changing heat exchanger, a first flash separation tank, a second flash separation tank, a third flash separation tank, a mechanical vapor compression pump and a condensed water level gauge.