The invention discloses a vacuum filtration device for a laboratory. The vacuum filtration device comprises a stirring mechanism, a liquid storage barrel, a filter membrane, a porous filter head and a filtrate bottle provided with a main air outlet and a liquid drainage opening; the stirring mechanism is arranged in the liquid storage barrel, the porous filter head is arranged at the joint of the liquid storage barrel and the filtrate bottle, the porous filter head is covered with the filter membrane, the main air outlet is connected with a vacuum air pump through a rubber pipe, and the liquid drainage opening is formed in the bottom end of the filtrate bottle; the porous filter head is provided with multiple small holes which are connected with branch pipes, all the branch pipes are combined to a main pipe, and the lower portion of the main pipe is provided with a water outlet. The vacuum filtration device for the laboratory is high in suction filtration efficiency, and the probability that the filter membrane is broken due to suction is reduced.