TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: The reaction temperature is 80-300 degrees C in step (A), and step (B), respectively. The time of performing the first heat treatment is 1-15 hours. The time of performing a second heat treatment is 3-20 hours. Preferred Components: The lithium salt is lithium chloride, lithium acetate, lithium carbonate or lithium hydroxide. The titanium salt is titanium tetrachloride, titanium dioxide, titanium isopropoxide (TTIP), or titanium trichloride. The porous lithium titanium oxide anode material is formicary-like non-uniform porous material. The holes are formed by 15-50 lithium titanium oxide particles which are adjacently arranged. The lithium titanium oxide particles are lithium titanium oxide (Li4Ti5O12). The lithium titanium oxide particle is in a diameter of 200-500 nm.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The organic acid is oxalic acid, acetic acid, carbonic acid, or nitric acid. The oxalic acid is in the concentration of 20-80 wt.%. EXAMPLE - A porous lithium titanium oxide anode material was prepared by the following steps. A mixed solution was prepared by mixing lithium chloride and oxalic acid (70 wt.%) thoroughly, dropping titanium tetrachloride into the mixture immediately to avoid the hydrolysis of titanium tetrachloride in air, and heating the solution at 100-250 degrees C for a half hour. At this time, a repulsive force was slightly formed by releasing hydrogen chloride (HCl) gas so as to suppress the formation of aggregates. Then, a first heat treatment is performed on the mixed solution at 400-600 degrees C and sintered for 3 hours. In this step, the reaction of lithium-ions with anatase titanium dioxide (TiO2) was mixed uniformly through this gentle heat treatment, so that the synthesis yield of the porous lithium titanium oxide anode material was increased. A second heat treatment at 800 degrees C and sintering for 10 hours was further performed on the production formed by the above steps. After oxalate anion in the solution was heated, carbon dioxide gas was released. The repulsive force in the molecules was generated due to the carbon dioxide gas, and irregular holes in the material were formed by the release of the carbon dioxide gas, so that a non-uniform porous lithium titanium oxide anode material was obtained. In this step, residual impurities such as titanium dioxide which were not reacted with Li2O, and impurities were removed through this high temperature heat treatment. Thus obtained porous lithium titanium oxide anode material having particle diameter of 200-500 nm, and formicary-like porous structure with non-uniform holes.