The invention discloses an economic statistical data acquisition device of a digital system and an acquisition method thereof, the economic statistical data acquisition device comprises a device shell, a scanning platform is mounted on one side of the upper part of the device shell, a lower pressing plate is arranged above the scanning platform, and metal springs are uniformly distributed on the surface of the lower pressing plate at equal intervals; the device also includes a magnetic suction plate, limiting plates, and a display; the magnetic suction plate is installed above the metal springs, sliding rods are fixed to the left side and the right side of the magnetic suction plate correspondingly, and a movable plate is arranged on the sides, away from the magnetic suction plate, of the sliding rods; the limiting plates are arranged at the front ends and the rear ends of the sliding rods; and the display is mounted on the left side of the scanning platform. Compared with an existing device, the economic statistical data acquisition device of the digital system and the acquisition method thereof have the advantages that the display which can be lifted and overturned can be stored inwards when not used, so that the display stably enters the interior of the device shell, and the situation that the display occupies the area of the acquisition device when not used is avoided; and the display can be protected.