The present invention provides a self-adhesive dental composite resin exhibiting excellent storage stability while maintaining mechanical strength, with few changes in the transparency and characteristics of a paste as well as low solidification risks in long-term storage. The present invention pertains to a self-adhesive dental composite resin containing an acid group-containing (meth) acrylic polymerizable monomer (a), an acid group-free multifunctional (meth) acrylic polymerizable monomer (b), a photopolymerization initiator (c), and a filler (d), wherein the filler (d) is treated with a surface treating agent and has an average particle diameter of 0.01-50.0µm, and the surface treating agent contains a silane coupling agent (A) represented by general formula (1) CH2=C(R1)-COO-(CH2)p-Si-R2 qR3 (3-q) (1) and an organosilazane (B) represented by general formula (2) R4R5R6-Si-NH-Si-R7R8R9 (2).
