A blocked polyisocyanate composition which contains a blocked polyisocyanate derived from a polyisocyanate and one or more blocking agents, comprising a constitutional unit represented by the following general formula and a constitutional unit represented by the following general formula, wherein a molar ratio of the constitutional unit represented by the following general formula to the constitutional unit represented by the following general formula is more than 5/95 and less than 95/5, the molar ratio being calculated by measuring the composition ratio of the structural unit to the structural unit by 1 H-NMR and 13 C-NMR after removing the solvent and other components from the blocked polyisocyanate composition at 50°C or less by an evaporator and drying under reduced pressure, wherein in the general formula, R 11, R 12 and R 13 are each independently an alkyl group optionally substituted by one or more substituents selected from the group consisting of a hydroxyl group and an amino group, R 14, R 15 and R 16 are each independently a hydrogen atom or an alkyl group optionally substituted by one or more substituents selected from the group consisting of a hydroxyl group and an amino group, and the wavy line represents a bonding site, wherein in the general formula, R 21, R 22, R 23 and R 24 are each independently a hydrogen atom or an alkyl group optionally substituted by one or more substituents selected from the group consisting of a hydroxyl group and an amino group, the wavy line represents a bonding site, and the polyisocyanate is a reaction product in which a plurality of monomer compounds having one or more isocyanate groups represented by -NCO are bonded, wherein the blocking agent for producing the blocked polyisocyanate contains a malonic acid ester having secondary alkyl group or a malonic acid ester having a primary alkyl group, and contains a malonic acid ester having a tertiary alkyl group, and wherein the content of the malonic acid ester having a secondary alkyl group and the malonic acid ester having a tertiary alkyl group is 50 mol% or more with respect to the total molar amount of all blocking agents used in the production of the blocked polyisocyanate. a constitutional unit represented by the following general formula and a constitutional unit represented by the following general formula, wherein a molar ratio of the constitutional unit represented by the following general formula to the constitutional unit represented by the following general formula is more than 5/95 and less than 95/5, the molar ratio being calculated by measuring the composition ratio of the structural unit to the structural unit by 1 H-NMR and 13 C-NMR after removing the solvent and other components from the blocked polyisocyanate composition at 50°C or less by an evaporator and drying under reduced pressure, wherein in the general formula, R 11, R 12 and R 13 are each independently an alkyl group optionally substituted by one or more substituents selected from the group consisting of a hydroxyl group and an amino group, R 14, R 15 and R 16 are each independently a hydrogen atom or an alkyl group optionally substituted by one or more substituents selected from the group consisting of a hydroxyl group and an amino group, and the wavy line represents a bonding site, wherein in the general formula, R 21, R 22, R 23 and R 24 are each independently a hydrogen atom or an alkyl group optionally substituted by one or more substituents selected from the group consisting of a hydroxyl group and an amino group, the wavy line represents a bonding site, and the polyisocyanate is a reaction product in which a plurality of monomer compounds having one or more isocyanate groups represented by -NCO are bonded, wherein the blocking agent for producing the blocked polyisocyanate contains a malonic acid ester having secondary alkyl group or a malonic acid ester having a primary alkyl group, and contains a malonic acid ester having a tertiary alkyl group, and wherein the content of the malonic acid ester having a secondary alkyl group and the malonic acid ester having a tertiary alkyl group is 50 mol% or more with respect to the total molar amount of all blocking agents used in the production of the blocked polyisocyanate.