The invention discloses a digital display device and application thereof. The digital display device comprises at least one digital display template, wherein each digital display template is provided with outlines of ten digits, namely, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, and outlines of the ten digits are crossed to form at least 50 fragments; each fragment is made into a light emitting fragment and is electrically connected with the control circuit; and the digital display templates can respectively display the ten digits by controlling each light emitting fragment to emit light and go out. The digital display device disclosed by the invention can display the ten digits clearly, vividly, fluently and attractively, and digits which are close to the printing quality can be combined due to combination of multiple digital display modules; meanwhile, the digital display templates are also applicable to a display device with large area.