The invention relates to a vacuum high speed blender which comprises a main cover composed of a cup cover and a bottom cover. The main cover is provided with an exhaust suction
nozzle and an exhaust hole. The vacuum high speed blender further comprises an auxiliary cover, a vacuum
nozzle is arranged on the auxiliary cover, and the bottom cover and the auxiliary cover are detachably assembled through a positive and negative turn-lock clasp; the exhaust suction
nozzle is arranged on the bottom cover through an elastic device in a vertically stretchable and movable mode, an upper
coupling portion is arranged on the exhaust suction nozzle, and a lower
coupling portion is arranged on the vacuum nozzle; an
air cavity is formed between the auxiliary cover and the bottom cover, the exhaust suction nozzle, the exhaust hole and the vacuum nozzle stretch into the
air cavity, and the auxiliary cover or the bottom cover is provided with a ventilation groove communicating the
air cavity with the external world. When the vacuum high speed blender is in use, no food residue is splashed to the main cover, only the auxiliary cover needs to be disassembled and washed, the main cover does not need to be flushed, and the service life of the
air pump is prolonged. The main cover and the auxiliary cover are detachably assembled through the positive and negative turn-lock clasp, and in the assembling and disassembling process,
coupling and separation of the exhaust suction nozzle and the vacuum nozzle are achieved. During vacuumizing of the cup body, the ventilation groove achieves the exhaust function, and the air leakage function is achieved during air return of the cup body.