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PROBLEM TO BE SOLVED : To provide a manufacturing method of a positive active material for a lithium battery realizing high discharge capacity and stable charge/discharge cycle characteristics, or the like, to provide the positive active material for the lithium battery, to provide an electrode for the lithium battery, and to provide the lithium battery. SOLUTION : The manufacturing method of a positive active material for a lithium battery is a manufacturing method of a positive active material for a lithium battery of LixAyDzPO4(A is one kind selected from Co, Ni, Mn, Fe, Cu, and Cr, D is one kind or two kinds or more selected from Mg, Ca, Fe, Ni, Co, Mn, Zn, Ge, Cu, Cr, Ti, Sr, Ba, Sc, Y, Al, Ga, In, Si, B, and rare earth elements, and different from A, and 0≤xCOPYRIGHT : (C)2006, JPO&NCIPI