The invention belongs to the technical field of vacuum device design, and particularly relates to a vacuum transportation tank for electron-beam encapsulation. The vacuum transportation tank comprisesa vacuum tank body, a vacuum tank cover, a vacuum tank base, a support column, a sample cup, a fastening mechanism, a valve and a suction pipe, an opening mechanism, a linear bearing piece and a sealing ring. The vacuum transportation tank is simple and reliable in design and convenient to operate; the vacuum tank body is sealed and vacuumized by bolts and rubber rings, so that good protection ofsamples from oxidation can be realized; and vacuum packaging materials can be opened quite conveniently during electron beam welding, and thus the operation cost is saved.