The present invention provides a positive electrode composition for a non-aqueous electrolyte secondary battery, wherein the composition includes a lithium-transition metal composite oxide represented by the following compositional formula: LiaNi1-x-yCoxM1yM2zMoαNbβO2 wherein 1.00≤a≤1.50, 0.00≤x≤0.50, 0.00≤y≤0.50, 0.000≤z≤0.020, 0.002≤α≤0.020, 0.002≤β≤0.020, and 0.00≤x+y≤0.70, M1 represents at least one element selected from the group consisting of Mn and Al, and M2 represents at least one element selected from the group consisting of Zr, Ti, Mg, Ta, and V, and a boron compound including at least boron and oxygen.