A cathode material for a lithium-ion secondary battery comprising: active material particles including central particles represented by general formula LixAyDzPO4 (here, A represents at least one element selected from the group consisting of Co, Mn, Ni, Fe, Cu, and Cr, D represents at least one element selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y, 0.9<x<1.1, 0<y<1, 0<z<1, and 0.9<y+z<1.1) and a carbonaceous film that coats surfaces of the central particles, characterized in that wherein, when a mixture of the active material particles, a conductive auxiliary agent and a binder in which a mixing ratio thereof is 94:1:5 in terms of a mass ratio is dissolved in a solvent to form paste having a total solid content amount of 45% by mass, a viscosity of the past is in a range of 1500 to 5,000 mPa·s at a shear rate of 4.0 [1/s] and at a measurement temperature of 25°C, wherein a volume-based median diameter of the active material particles is 0.50 μm or more and 0.80 μm or less, a BET specific surface area of the active material particles is 5 m 2 /g or more and 25 m 2 /g or less, a volume-based particle size distribution of the active material particles has at least two peaks in which one peak is included in a coarse particle side and one peak is included in a fine particle side, and a coarse particle ratio which is obtained by following formula based on the volume-based particle size distribution of the active material particles is 35% or more and 65% or less, when A represents a coarse particle-side peak area and B represents a fine particle-side peak area of the particle size distribution, coarse particle ratio (%)=A/(A+B)×100. active material particles including central particles represented by general formula LixAyDzPO4 (here, A represents at least one element selected from the group consisting of Co, Mn, Ni, Fe, Cu, and Cr, D represents at least one element selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y, 0.9<x<1.1, 0<y<1, 0<z<1, and 0.9<y+z<1.1) and a carbonaceous film that coats surfaces of the central particles, characterized in that wherein, when a mixture of the active material particles, a conductive auxiliary agent and a binder in which a mixing ratio thereof is 94:1:5 in terms of a mass ratio is dissolved in a solvent to form paste having a total solid content amount of 45% by mass, a viscosity of the past is in a range of 1500 to 5,000 mPa·s at a shear rate of 4.0 [1/s] and at a measurement temperature of 25°C, wherein a volume-based median diameter of the active material particles is 0.50 μm or more and 0.80 μm or less, a BET specific surface area of the active material particles is 5 m 2 /g or more and 25 m 2 /g or less, a volume-based particle size distribution of the active material particles has at least two peaks in which one peak is included in a coarse particle side and one peak is included in a fine particle side, and a coarse particle ratio which is obtained by following formula based on the volume-based particle size distribution of the active material particles is 35% or more and 65% or less, when A represents a coarse particle-side peak area and B represents a fine particle-side peak area of the particle size distribution, coarse particle ratio (%)=A/(A+B)×100.