A testing apparatus including a vacuum chamber for a ground test, the apparatus comprising: a buffer chamber that includes an entrance through which an object to be inspected can be inserted and a first door configured to open that or close the entrance; a testing chamber that is separated from one side of the buffer chamber and includes a connection passage communicating with the buffer chamber; a shutter unit configured to open or close the connection passage, wherein the shutter unit includes a shutter plate configured to open or close the connection passage while vertically sliding in the connection passage and a shutter operating part configured to vertically move the shutter plate, wherein a shutter accommodation groove into which the shutter plate is inserted is formed under the connection passage; a vacuum generation unit configured to suction air in the buffer chamber and the testing chamber so as to make the buffer chamber and the testing chamber be in a vacuum state characterised in that the testing apparatus includes: a soil storage part which is disposed in the testing chamber and in which soil is accommodated for testing the object to be inspected on the ground; a sealing plate which is mounted on a lower surface of the buffer chamber configured to slide along a lower surface of the connection passage to close an upper end portion of the shutter accommodation groove while sliding from the buffer chamber to the testing chamber while transferring the object to be inspected from the buffer chamber to the testing chamber or from the testing chamber to the buffer chamber; and an operational plate fixed to a lower end portion of the first door and configured to move with the first door, wherein the sealing plate is mounted to slide parallel to the operational plate. a buffer chamber that includes an entrance through which an object to be inspected can be inserted and a first door configured to open that or close the entrance; a testing chamber that is separated from one side of the buffer chamber and includes a connection passage communicating with the buffer chamber; a shutter unit configured to open or close the connection passage, wherein the shutter unit includes a shutter plate configured to open or close the connection passage while vertically sliding in the connection passage and a shutter operating part configured to vertically move the shutter plate, wherein a shutter accommodation groove into which the shutter plate is inserted is formed under the connection passage; a vacuum generation unit configured to suction air in the buffer chamber and the testing chamber so as to make the buffer chamber and the testing chamber be in a vacuum state characterised in that the testing apparatus includes: a soil storage part which is disposed in the testing chamber and in which soil is accommodated for testing the object to be inspected on the ground; a sealing plate which is mounted on a lower surface of the buffer chamber configured to slide along a lower surface of the connection passage to close an upper end portion of the shutter accommodation groove while sliding from the buffer chamber to the testing chamber while transferring the object to be inspected from the buffer chamber to the testing chamber or from the testing chamber to the buffer chamber; and an operational plate fixed to a lower end portion of the first door and configured to move with the first door, wherein the sealing plate is mounted to slide parallel to the operational plate. a soil storage part which is disposed in the testing chamber and in which soil is accommodated for testing the object to be inspected on the ground; a sealing plate which is mounted on a lower surface of the buffer chamber configured to slide along a lower surface of the connection passage to close an upper end portion of the shutter accommodation groove while sliding from the buffer chamber to the testing chamber while transferring the object to be inspected from the buffer chamber to the testing chamber or from the testing chamber to the buffer chamber; and an operational plate fixed to a lower end portion of the first door and configured to move with the first door, wherein the sealing plate is mounted to slide parallel to the operational plate.