The invention provides a preparation method of an electrode material with the lowered specific area. The method comprises the steps of providing a solid-liquid dispersing system with the electrode material of the nanometer scale; freezing and drying the solid-liquid dispersing system, and obtaining a frozen-dried product; calcining the frozen-dried product, enlarging the size of the electrode material, and therefore obtaining the electrode material with the lowered specific area is obtained. The invention further provides the electrode material with the lowered specific area and a lithium ionbattery with the electrode material with the lowered specific area.