The present invention provides a self-adhesive composite resin having exceptional mechanical strength and adhesiveness to teeth. The present invention pertains to a self-adhesive dental composite resin containing an asymmetrical acrylamide-methacrylic acid ester compound (a) represented by general formula (1), an acidic group-containing (meth)acrylic polymerizable monomer (b), a hydrophobic crosslinkable polymerizable monomer (c), a photopolymerization initiator (d), and a filler (e). In formula (1), X is an optionally substituted C1-C6 linear or branched aliphatic group or aromatic group； aliphatic groups may be interrupted by at least one linking group selected from the group consisting of O-, -S-, -CO-, -CO-O-, -O-CO-, NR1-, -CO-NR1-, NR1-CO-, -CO-O-NR1-, -O-CO-NR1-, and NR1-CO-NR1. R1 represents a hydrogen atom or an optionally substituted C1-C6 linear or branched aliphatic group.
