A Cr based negative electrode active material used on secondary lithium cell is oxide Cr2 ¿C xMxO3 of transition metal Cr doped with varied atoms as 0.001 not greater than x not greater than 1.5, M being li, Ag, mg, Ni, Cu, Zn, Sn, Co, Fe, Ca, Sr, Ti, Mn , Ce, Mo or Zr, material particle diameter being 50nm to 20 micron. The said material also can include conductive additives with the amount of 1 ¿C 20 wt% to said material, or can have carbon film shell on said material core, or can apply 20 ¿C 98 wt % ratio to mix with existing negative electrode material for being used as negative electrode material of secondary lithium cell.