To elucidate the correlation between the rheological properties and thermal contraction characteristics of modified asphalt, and to establish a theoretical basis for crack-resistant pavement design in extreme climate regions, this study focuses on SBS-, SBR-, and rubber-modified asphalt. Using temperature sweep tests with a dynamic shear rheometer, multiple stress creep recovery tests, bending beam rheometer tests, and a gray relational analysis model, we systematically characterized the high- a