分析了高等级公路当前过早损坏的原因:路基设计薄弱;施工中不重视路基及路面的分层压实。阐述了解决这一问题的施工方法及成功的施工经验。 The causes of premature damage to high-grade highways are analyzed: the design of subgrade is weak; and the construction does not pay attention to the sub-level compaction of subgrade and pavement. Described the construction methods to solve this problem and successful construction experience.