Abstract: Through the analysis of the effect and mechanism of polymer and plasticizer in asphalt modification, the high content linear SBS,high dosage of aromatic oil and antioxidant compound modified asphalt technology route and high temperature and high speed shear blending modification technique were employed. A low thermosensitive shock isolation protective asphalt material was developed. The shear modulus, toughness, hysteresis displacement restoring capacity, and microstructure of this asphalt were measured systematically under the condition of different temperature and time. It shows that high viscoelastic asphalt is fully swelled and crosslinked. Asphalt and modifier are formed to half interpenetrating network structure, compared with 10% linear SBS modified asphalt. Compared with the penetration thermosensitive characterization method, the dynamic shear modulus thermosensitive characterization method is more accurate.