A conductive resin composition comprising at least: a (meth)acrylic resin having a weight average molecular weight of 1,000 or more and 400,000 or less, wherein the weight average molecular weight is a value calculated using tetrahydrofuran as a mobile phase and a calibration curve in terms of polystyrene, measured by gel permeation chromatography, GPC; a monomer having a glycidyl group and/or a (meth)acryloyl group in its molecule; a conductive filler having an average particle diameter of 10 to 500 nm, wherein the average particle diameter refers to a particle diameter of a number-based average particle diameter D50, median diameter, measured by a laser diffraction/scattering method; a conductive filler having the average particle diameter of 1 to 50 μm; and a radical polymerization initiator, wherein a sum of the content of the conductive filler and the content of the conductive filler is 2,000 to 80,000 parts by mass based on 100 parts by mass of the total amount of the (meth)acrylic resin and the monomer, a content ratio of the conductive filler and the conductive filler (the conductive filler: the conductive filler) is 5:1 to 1:10 by mass ratio, the monomer is selected from the group consisting of glycidyl compounds such as ethyl glycidyl ether, butyl glycidyl ether, t-butyl glycidyl ether, allyl glycidyl ether, benzyl glycidyl ether, glycidyl phenyl ether, bisphenol A diglycidyl ether, compounds having an acryloyl group or a methacryloyl group such as isoamyl acrylate, neopentyl glycol diacrylate, trimethylolpropane triacrylate, ditrimethylolpropane tetraacrylate, 2-hydroxy-3-acryloyloxypropyl methacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, and compounds having the glycidyl group and the (meth)acryloyl group such as acrylic acid glycidyl ether, methacrylic acid glycidyl ether, and 4-hydroxybutyl acrylate glycidyl ether, and combinations thereof, and the content of the monomer is 40 to 99 parts by mass in the total amount of 100 parts by mass with the (meth)acrylic resin. a (meth)acrylic resin having a weight average molecular weight of 1,000 or more and 400,000 or less, wherein the weight average molecular weight is a value calculated using tetrahydrofuran as a mobile phase and a calibration curve in terms of polystyrene, measured by gel permeation chromatography, GPC; a monomer having a glycidyl group and/or a (meth)acryloyl group in its molecule; a conductive filler having an average particle diameter of 10 to 500 nm, wherein the average particle diameter refers to a particle diameter of a number-based average particle diameter D50, median diameter, measured by a laser diffraction/scattering method; a conductive filler having the average particle diameter of 1 to 50 μm; and a radical polymerization initiator, wherein a sum of the content of the conductive filler and the content of the conductive filler is 2,000 to 80,000 parts by mass based on 100 parts by mass of the total amount of the (meth)acrylic resin and the monomer, a content ratio of the conductive filler and the conductive filler (the conductive filler: the conductive filler) is 5:1 to 1:10 by mass ratio, the monomer is selected from the group consisting of glycidyl compounds such as ethyl glycidyl ether, butyl glycidyl ether, t-butyl glycidyl ether, allyl glycidyl ether, benzyl glycidyl ether, glycidyl phenyl ether, bisphenol A diglycidyl ether, compounds having an acryloyl group or a methacryloyl group such as isoamyl acrylate, neopentyl glycol diacrylate, trimethylolpropane triacrylate, ditrimethylolpropane tetraacrylate, 2-hydroxy-3-acryloyloxypropyl methacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, and compounds having the glycidyl group and the (meth)acryloyl group such as acrylic acid glycidyl ether, methacrylic acid glycidyl ether, and 4-hydroxybutyl acrylate glycidyl ether, and combinations thereof, and the content of the monomer is 40 to 99 parts by mass in the total amount of 100 parts by mass with the (meth)acrylic resin. a sum of the content of the conductive filler and the content of the conductive filler is 2,000 to 80,000 parts by mass based on 100 parts by mass of the total amount of the (meth)acrylic resin and the monomer, a content ratio of the conductive filler and the conductive filler (the conductive filler: the conductive filler) is 5:1 to 1:10 by mass ratio, the monomer is selected from the group consisting of glycidyl compounds such as ethyl glycidyl ether, butyl glycidyl ether, t-butyl glycidyl ether, allyl glycidyl ether, benzyl glycidyl ether, glycidyl phenyl ether, bisphenol A diglycidyl ether, compounds having an acryloyl group or a methacryloyl group such as isoamyl acrylate, neopentyl glycol diacrylate, trimethylolpropane triacrylate, ditrimethylolpropane tetraacrylate, 2-hydroxy-3-acryloyloxypropyl methacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, and compounds having the glycidyl group and the (meth)acryloyl group such as acrylic acid glycidyl ether, methacrylic acid glycidyl ether, and 4-hydroxybutyl acrylate glycidyl ether, and combinations thereof, and the content of the monomer is 40 to 99 parts by mass in the total amount of 100 parts by mass with the (meth)acrylic resin.