The invention belongs to the technical field of electrode materials and preparation methods thereof, and particularly relates to super-capacity carbon, a preparation method and applications thereof, wherein the specific surface area B of the super-capacity carbon is 1200-3500 m<2>/g. The preparation method comprises: 1) carbonizing a formed natural non-lignocellulose carbon precursor; 2) pre-activating the product obtained in the step 1); and 3) mixing the product obtained by the pre-activating in the step 2) and an alkaline compound, and activating. According to the invention, by using the preparation method, the active carbon with high specific surface area, such as active carbon with a specific surface area B of 1200-3500 m<2>/g, can be prepared at good yield and low cost, so that the prepared active carbon can be used as a supercapacitor electrode material; and the used raw materials are common, wide in source and low in cost.