This standard provides a uniform test method for evaluating the viscoelastic properties of solution-polymerized styrene-butadiene rubber (S-SBR), including functionalized varieties. It specifies in detail the entire process, from the standard test formulation and sample preparation procedures to specific evaluation tests. The evaluation covers tests on unvulcanized rubber, vulcanization characteristics, and particularly dynamic viscoelastic evaluations using equipment such as dynamic mechanical analyzers to obtain key performance indicators such as loss factor (tanδ), storage modulus (E'), and loss modulus (E"). This standard is equivalent to the international standard and aims to provide a normative basis for raw material quality control and research and development in critical applications such as high-performance green tires.