传统聚合物苯乙烯-丁二烯-苯乙烯（styrene-butadiene-styrene, SBS）改性沥青存在相容性较差、生产运输过程中易离析，多聚磷酸能显著提高改性沥青的储存稳定性和相容性。为此，梳理了多聚磷酸／SBS复合改性沥青的研究现状，系统概述了多聚磷酸／SBS复合改性沥青制备工艺，重点阐明了多聚磷酸／SBS复合改性沥青的改性机理和路用性能。结果表明：多聚磷酸／SBS改性沥青能显著改善沥青的高温性能、抗老化性能和疲劳性能；对水稳定性的影响取决于复配基质沥青种类以及混合料级配设计；而是否改善低温性能目前还尚无定论，还需进一步探索。最后对多聚磷酸／SBS复合改性沥青未来的研究方向做出了展望。

Traditional polymer styrene-butadiene-styrene (SBS) modified asphalt is considered to have poor compatibility and is easily isolated during production and transportation. The storage stability and compatibility of modified asphalt can be significantly improved by polyphosphoric acid. Therefore, the research status of polyphosphoric acid/SBS composite modified asphalt was reviewed. The preparation process of polyphosphoric acid/SBS composite modified asphalt was systematically summarized, with a focus placed on the modification mechanism and road performance of polyphosphoric acid/SBS composite modified asphalt. The results indicate that the high-temperature performance, anti-aging performance, and fatigue performance of asphalt can be significantly enhanced by polyphosphoric acid/SBS modified asphalt. The influence on water stability is found to depend on the type of compound matrix asphalt and the gradation design of the mixture. Whether the low-temperature performance is improved remains inconclusive and requires further exploration. Finally, the future research direction of polyphosphoric acid/SBS composite modified asphalt is prospected.