A hot-dip galvanized steel sheet having excellent aging-resistance properties and bake hardenability, the hot-dip galvanized steel sheet having a galvanized layer on the surface of a base steel sheet, wherein the base steel sheet comprises: by wt%, 0.002-0.012% of carbon; 1.6-2.7% of manganese (Mn); 0.03% or less, excluding 0%, of phosphorus; 0.01% or less, excluding 0%, of sulfur; 0.01% or less, excluding 0%, of nitrogen; 0.02-0.06% of aluminum (sol.Al); 1.0% or less, excluding 0%, of chromium (Cr), the base steel sheet further optionally comprising at least one of 0.003% or less, excluding 0%, of boron and 0.2% or less, excluding 0%, of molybdenum (Mo), with a remainder of iron and inevitable impurities; the base steel sheet satisfies the relationship 1.3 ≤ Mn wt % / 1.15 × Cr wt % ≤ 20.5; Mneq, defined by the following Relational Expression 1, satisfies 1.9≤Mneq≤3.9; the microstructure of the steel comprises an area ratio of 95% or more of ferrite, with a remainder of martensite as a second phase; an area% of fine martensite having an average diameter of 1 μm or less in the martensite phase forming the second phase is 2% or less, excluding 0%; an occupation ratio of martensite present in a ferrite grain boundary, defined by the following Relational Expression 2, is 90% or more; and a difference between an average Mn concentration wt% (a) in a martensite phase at a 1/4t point of the base steel sheet and an average Mn concentration wt% (b) in a ferrite phase within 1 μm of the martensite phase, defined by the following Relational Expression 3, is 0.3 wt% or more, Mneq = Mn + 0.45 ⁢ Si + 2 ⁢ P + 1.15 ⁢ Cr P % = Pgb / Pg + Pgb × 100, where P is an occupation ratio of martensite present in a ferrite grain boundary, Pgb is an occupation area of martensite present in the ferrite grain boundary, and Pg is an occupation area of martensite present in ferrite crystal grains, a − b ≥ 0.3 wt ⁢ %, where a is the average Mn concentration wt% (a) in the martensite phase at the 1/4t point of the base steel sheet, and b is the average Mn concentration wt% (b) in the ferrite phase within 1 μm of the martensite phase. by wt%, 0.002-0.012% of carbon; 1.6-2.7% of manganese (Mn); 0.03% or less, excluding 0%, of phosphorus; 0.01% or less, excluding 0%, of sulfur; 0.01% or less, excluding 0%, of nitrogen; 0.02-0.06% of aluminum (sol.Al); 1.0% or less, excluding 0%, of chromium (Cr), the base steel sheet further optionally comprising at least one of 0.003% or less, excluding 0%, of boron and 0.2% or less, excluding 0%, of molybdenum (Mo), with a remainder of iron and inevitable impurities; the base steel sheet satisfies the relationship 1.3 ≤ Mn wt % / 1.15 × Cr wt % ≤ 20.5; Mneq, defined by the following Relational Expression 1, satisfies 1.9≤Mneq≤3.9; the microstructure of the steel comprises an area ratio of 95% or more of ferrite, with a remainder of martensite as a second phase; an area% of fine martensite having an average diameter of 1 μm or less in the martensite phase forming the second phase is 2% or less, excluding 0%; an occupation ratio of martensite present in a ferrite grain boundary, defined by the following Relational Expression 2, is 90% or more; and a difference between an average Mn concentration wt% (a) in a martensite phase at a 1/4t point of the base steel sheet and an average Mn concentration wt% (b) in a ferrite phase within 1 μm of the martensite phase, defined by the following Relational Expression 3, is 0.3 wt% or more, Mneq = Mn + 0.45 ⁢ Si + 2 ⁢ P + 1.15 ⁢ Cr P % = Pgb / Pg + Pgb × 100, where P is an occupation ratio of martensite present in a ferrite grain boundary, Pgb is an occupation area of martensite present in the ferrite grain boundary, and Pg is an occupation area of martensite present in ferrite crystal grains, a − b ≥ 0.3 wt ⁢ %, where a is the average Mn concentration wt% (a) in the martensite phase at the 1/4t point of the base steel sheet, and b is the average Mn concentration wt% (b) in the ferrite phase within 1 μm of the martensite phase.