The utility model discloses a direct-drive type heat pump evaporation and concentration system, and relates to an evaporation and concentration technology. An existing evaporation and concentration system has the problems of large investment and energy waste. According to the utility model, the electric heater is arranged in the heat pump evaporator; the evaporation and concentration system exhausts gas in the system through a vacuumizing pipeline; the evaporation tank and the heat pump evaporator form a closed loop through a first heat pump working medium circulating pipeline and a second heat pump working medium circulating pipeline; the heat pump compressor is located on the first heat pump working medium circulating pipeline, and the heat pump throttling expansion device is located onthe second heat pump working medium circulating pipeline. A raw material solution enters the evaporation tank through a feeding pipeline, and a concentrated solution is discharged through a discharging pipeline; secondary steam generated in the evaporation tank flows through the heat pump evaporator through a secondary steam pipeline to release heat and condense, condensate is discharged out of the system through a heat pump condensate pipeline, and condensate water is discharged out of the system through a heat pump condensate pipeline. The device is used for evaporation and concentration ofraw material liquid.