NOVELTY - A composition of lithium secondary battery electrode contains 1st active material particle, 2nd active material particle, dispersing agent, binder, and solvent. The 1st active material particle is secondary particle of lithium phosphoric acid metal composite particle covered with electroconductive carbon aggregate, wherein primary particle diameter of surface of lithium phosphoric acid metal composite particle is 50-300 nm, secondary particle is obtained without passing through crushing process after baking, and average particle diameter of 1st active material particle is 300 nm to 5 mu m.    USE - A composition for forming electrode of lithium secondary battery (all claimed) used for small portable electronic devices and vehicles.    ADVANTAGE - The composition of lithium secondary battery electrode improves adhesiveness between compound material layer and electrical power collector and provides excellent durability and charge/discharge characteristics to batteries.    DETAILED DESCRIPTION - A composition of lithium secondary battery electrode contains 1st active material particle, 2nd active material particle, dispersing agent, binder, and solvent. The 1st active material particle is secondary particle of lithium phosphoric acid metal composite particle of formula LiFe1-xMxPO4 (1) covered with electroconductive carbon aggregate, wherein primary particle diameter of surface of lithium phosphoric acid metal composite particle is 50-300 nm, secondary particle is obtained without passing through crushing process after baking, and average particle diameter of 1st active material particle is 300 nm to 5 mu m. The 2nd active material particle is granulated particle of lithium phosphoric acid metal composite particle (1) covered with electroconductive carbon aggregate, wherein granulated particle is obtained by removing solvent from slurry which disperses secondary particle in solvent and average particle diameter of 2nd active material particle is 5-30 mu m.    x=0-1; and    M=Mn, Co, Ni, and/or V.    INDEPENDENT CLAIMS are included for:    (1) lithium secondary battery electrode provided with electrical power collector and compound material layer containing composition for lithium secondary battery electrode formation coated on electrical power collector; and    (2) secondary battery provided with lithium secondary battery electrode as positive electrode, negative electrode, and electrolyte solution.