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 C
