The utility model discloses a space-adjustable box-type substation, which comprises a box body, a partition plate is connected between the inner walls of the left side and the right side of the box body and close to the top through bolts, a movable door is mounted on the front side of the box body, and a movable plate is slidably connected between the bottom of the partition plate and the bottom of an inner cavity of the box body. A lifting plate is arranged between the two movable plates and close to the top, and connecting rods are movably connected to the positions, close to the left side and the right side, of the front wall and the rear wall of the lifting plate through rotating shafts and bearings correspondingly. According to the technical scheme, through mutual cooperation of a first double-end electric cylinder, a first positioning plate, a moving plate, a lifting plate, a connecting rod and other components, effective secondary adjustment can be carried out, so that effective space adjustment can be carried out, effective position limitation can be carried out during space adjustment, the stability of the device is improved, and the service life of the device is prolonged. In addition, effective ventilation can be carried out, and the air circulation speed and the use efficiency are improved.