A resin particle comprising a microparticle having a volume average particle size, as measured according to the description, of 0.01 to 0.5 μm and made of a crystalline resin which is fixed to a surface of a resin particle containing a thermoplastic resin (b) selected from a vinyl resin, a polyurethane resin, a polyester resin and combinations thereof, wherein the crystalline resin is at least one kind selected from the group consisting of the following to: a crystalline polyester containing a straight-chain aliphatic diol having an alkylene chain with 2 to 50 carbon atoms and a straight-chain aliphatic dicarboxylic acid having an alkylene chain with 2 to 50 carbon atoms as essential constitutional units, wherein the total number of the number of carbon atoms in the alkylene chain of the diol and the number of carbon atoms in the alkylene chain of the dicarboxylic acid is 10 to 52, and further containing an aromatic dicarboxylic acid with 6 to 30 carbon atoms as a constitutional unit as necessary, a crystalline polyurethane and/or polyurea containing a straight-chain aliphatic diol having an alkylene chain with 2 to 50 carbon atoms and/or a straight-chain aliphatic diamine having an alkylene chain with 2 to 50 carbon atoms, and a straight-chain aliphatic diisocyanate having an alkylene chain with 2 to 50 carbon atoms as essential constitutional units, and has the total number of the average number of carbon atoms in the alkylene chain of the diol and/or the diamine, and the number of carbon atoms in the alkylene chain of the diisocyanate of 10 to 52, a crystalline vinyl resin containing an alkyl (meth)acrylate having 12 to 50 carbon atoms in the alkyl group as an essential constitutional unit, a crystalline vinyl resin containing (meth)acrylonitrile and a crystalline vinyl monomer as essential constitutional units, and a crystalline polyolefin, wherein the degree of swelling, which is measured using a magnetic floating balance as specified in the description, of the microparticle by liquid or supercritical carbon dioxide at a temperature lower than the glass transition temperature, as measured by differential scanning calorimetry according to the description, or the melting point, as determined from an endothermic peak in differential scanning calorimetry according to the description, of the microparticle is 16% or less. a crystalline polyester containing a straight-chain aliphatic diol having an alkylene chain with 2 to 50 carbon atoms and a straight-chain aliphatic dicarboxylic acid having an alkylene chain with 2 to 50 carbon atoms as essential constitutional units, wherein the total number of the number of carbon atoms in the alkylene chain of the diol and the number of carbon atoms in the alkylene chain of the dicarboxylic acid is 10 to 52, and further containing an aromatic dicarboxylic acid with 6 to 30 carbon atoms as a constitutional unit as necessary, a crystalline polyurethane and/or polyurea containing a straight-chain aliphatic diol having an alkylene chain with 2 to 50 carbon atoms and/or a straight-chain aliphatic diamine having an alkylene chain with 2 to 50 carbon atoms, and a straight-chain aliphatic diisocyanate having an alkylene chain with 2 to 50 carbon atoms as essential constitutional units, and has the total number of the average number of carbon atoms in the alkylene chain of the diol and/or the diamine, and the number of carbon atoms in the alkylene chain of the diisocyanate of 10 to 52, a crystalline vinyl resin containing an alkyl (meth)acrylate having 12 to 50 carbon atoms in the alkyl group as an essential constitutional unit, a crystalline vinyl resin containing (meth)acrylonitrile and a crystalline vinyl monomer as essential constitutional units, and a crystalline polyolefin, wherein