A high-tensile-strength hot-rolled steel sheet having a composition which contains by mass% 0.02 to 0.08% C, 0.01 to 0.50% Si, 0.5 to 1.8% Mn, 0.025% or less P, 0.005% or less S, 0.005 to 0.10% Al, 0.01 to 0.10% Nb, 0.001 to 0.05% Ti, Fe and unavoidable impurities as a balance, and further optionally by mass% one or two kinds or more selected from 0.01 to 0.10% V, 0.01 to 0.50% Mo, 0.01 to 1.0% Cr, 0.01 to 0.50% Cu, 0.01 to 0.50% Ni, and further optionally by mass% at least one of 0.0005 to 0.005% Ca, 0.005% or less N, 0.005% or less O, 0.003% or less Mg, 0.005% or less Sn, wherein the steel sheet contains C, Ti and Nb in such a manner that a following formula (Ti+(Nb/2))/C<4, wherein Ti, Nb, C is the contents of respective elements in mass%, is satisfied; the steel sheet has a structure where a primary phase of the structure at a position 1mm away from a surface of the steel sheet in a sheet thickness direction is one selected from a group consisting of a ferrite phase, tempered martensite and a mixture structure of a ferrite phase and tempered martensite, a primary phase of the structure at a sheet thickness center position is formed of a ferrite phase, and a difference ΔV between a structural fraction (volume%) of a secondary phase at the position 1mm away from the surface of the steel sheet in the sheet thickness direction and a structural fraction (volume%) of a secondary phase at the sheet thickness center position is 2% or less, wherein the structure at the position 1mm away from the surface in the sheet thickness direction is a structure where the primary phase is formed of the ferrite phase, and a difference ΔD between an average grain size of the ferrite phase at the position 1mm away from the surface in the sheet thickness direction and an average grain size of the ferrite phase at the sheet thickness center position is 2μm or less, and wherein the average grain size of the ferrite phase at the sheet thickness center position is 5μm or less, the structural fraction (volume%) of the secondary phase is 2% or less, and a sheet thickness is more than 22mm. 0.02 to 0.08% C, 0.01 to 0.50% Si, 0.5 to 1.8% Mn, 0.025% or less P, 0.005% or less S, 0.005 to 0.10% Al, 0.01 to 0.10% Nb, 0.001 to 0.05% Ti, Fe and unavoidable impurities as a balance, and further optionally by mass% one or two kinds or more selected from 0.01 to 0.10% V, 0.01 to 0.50% Mo, 0.01 to 1.0% Cr, 0.01 to 0.50% Cu, 0.01 to 0.50% Ni, and further optionally by mass% at least one of 0.0005 to 0.005% Ca, 0.005% or less N, 0.005% or less O, 0.003% or less Mg, 0.005% or less Sn, wherein the steel sheet contains C, Ti and Nb in such a manner that a following formula (Ti+(Nb/2))/C<4, wherein Ti, Nb, C is the contents of respective elements in mass%, is satisfied; the steel sheet has a structure where a primary phase of the structure at a position 1mm away from a surface of the steel sheet in a sheet thickness direction is one selected from a group consisting of a ferrite phase, tempered martensite and a mixture structure of a ferrite phase and tempered martensite, a primary phase of the structure at a sheet thickness center position is formed of a ferrite phase, and a difference ΔV between a structural fraction (volume%) of a secondary phase at the position 1mm away from the surface of the steel sheet in the sheet thickness direction and a structural fraction (volume%) of a secondary phase at the sheet thickness center position is 2% or less, wherein the structure at the position 1mm away from the surface in the sheet thickness direction is a structure where the primary phase is formed of the ferrite phase, and a difference ΔD between an average grain size of the ferrite phase at the position 1mm away from the surface in the sheet thickness direction and an average grain size of the ferrite phase at the sheet thickness center position is 2μm or less, and wherein the average grain size of the ferrite phase at the sheet thickness center position is 5μm or less, the structural fraction (volume%) of the secondary phase is 2% or less, and a sheet thickness is more than 22mm.