The utility model discloses a double-stage compression type heat pump double-effect evaporation and concentration system, and relates to a double-effect evaporation and concentration circulating system. The utility model aims to solve the problems of high energy consumption and low vacuum degree of the conventional double-effect evaporation and concentration system. The air conditioner comprises afirst compressor, heat pump condenser, heat pump first evaporator, heat pump second evaporator, the system comprises a second compressor, a first intermediate water circulation pipeline, a second intermediate water circulation pipeline, a first-effect evaporation tank, a second-effect evaporation tank, a starter, a condensed water collection tank, a first starting live steam pipeline, a first first-effect juice steam pipeline, a second-effect juice steam pipeline, a starting secondary steam pipeline, a main condensed water pipeline, a second first-effect juice steam pipeline and a second starting live steam pipeline. The device can be applied to evaporation and concentration processes of industrial production such as pharmacy, milk powder, amino acid, environment-friendly water treatmentand the like, waste heat of double-effect juice steam is recycled, and the purpose of energy-saving production is achieved.