The organic montmorillonite (OMMT) was obtained via intercalation of Na-montmorillonite by organic intercalator. Then the ultraviolet absorber (UVA) intercalated organic montmorillonite was prepared with different types of UVA and OMMT. The structure of UVA intercalated OMMT was characterized by X-ray diffraction (XRD) test. The UVA intercalated OMMT modified asphalt was prepared via melt blending, and the thermo-oxidative aging and ultraviolet (UV) aging of the modified asphalt were simulated by thin film oven test (TFOT) and UV aging test, respectively. The physical properties, as well as thermo-oxidative and UV aging properties of UVA intercalated OMMT modified asphalt were investigated through conventional physical properties test. Based on these, the effect of different UVA intercalated OMMT on aging resistance of asphalt was evaluated. The results show that both the thermo-oxidative and UV aging resistance of asphalt can be improved by the UVA intercalated OMMT, among which the UV328 intercalated OMMT modified asphalt and UV326 intercalated OMMT modified asphalt show better aging resistance. This can be attributed to the larger intercalation rate of the UV328 intercalated OMMT and UV326 intercalated OMMT. On one hand, the layered structure of montmorillonite can prevent diffusion of heat and oxygen into asphalt; on the other hand, larger intercalation rate can enhance the synergistic effect on shielding and absorbing UV light of the OMMT intercalated by UVA.