Based on the grasp of the current situation of modified bio-asphalt research,the paper summari-zes the preparation process of modified bio-asphalt,analyzes its modification mechanism and evaluates its modification effect,aiming to provide reference for the research and application of modified bio-asphalt.The analysis shows that:balancing the high and low temperature performance of modified bio-asphalt is the key to solving the defects of bio-asphalt in the future;the establishment of a joint preparation system of modifier,bio-oil and matrix asphalt is conducive to improving the availability and research value of bio-asphalt.
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