The invention discloses equipment for desulfurization wastewater treatment based on MVR evaporation. The equipment comprises a water storage tank, an acid pickling spherical tank, an alkali washing spherical tank, an electrolytic reaction cell, and a mvr evaporator which are connected in sequence; a condenser and the evaporation chamber of the mvr evaporator are connected with the mvr evaporator through a centrifugal compressor; a drawing type discharging device is also arranged on the electrolytic reaction cell at the position towards the top of the mvr evaporator, and the drawing type discharging device is drawn by drawing power source and drawing structure to pull the electrolyzed desulfurization wastewater out from the bottom of the electrolytic reaction cell; the fixed discharging end of the open cylindrical chute just covers the top of the mvr evaporator. The bottom of the vibrating dirt cleaning unit is also provided with a trumpet-shaped slag cleaning device and an incinerating device, and the top of the vibrating dirt cleaning unit is connected to the mvr evaporator at a position close to the top of the mvr evaporator through an air pipe. The equipment and the method provided by the invention can ensure that the desulfurization wastewater can be completely purified, and each process can treat the crystals individually in the process of purification under the condition that each link can be operated separately without affecting the other technology processes.