The invention discloses a shape-controllable carbonized melamine resin super capacitor electrode material and a preparation method and an application thereof. The method comprises the following steps:(1) peeling, cutting, washing, drying, crushing and sieving tobacco straws to obtain tobacco straw powder; (2) uniformly mixing melamine resin powder and the tobacco straw powder according to a massratio of 2: (0.8-2), adding carbon nanotubes, and carrying out ball milling, uniform mixing, tabletting, heating at 135-150 DEG C for 20-60 minutes and cooling to obtain a composite material; and (3)carbonizing the composite material at 650-950 DEG C under the condition of nitrogen or inert gas, and carrying out cooling to obtain the carbonized melamine resin super capacitor electrode material. By using the prepared electrode material, the process in which the shape of a carbon material needs to be designed by using an adhesive when the carbon material is used for preparing a super capacitoris avoided. The preparation method is simple, low in cost and environment-friendly, and has a good prospect in industrialization.