Through the example analysis on deep hole dynamic compaction method treatment of collapsible loess foundation engineering,this pa-per summed up the principle of hole dynamic compaction method,construction control key points and technological advantages,showed the deep hole dynamic compaction method as a foundation treatment technology,could better eliminate the collapsibility of big thickness collapsible loess and greatly improve the bearing capacity of foundation.%通过运用孔内深层强夯法处理湿陷性黄土地基工程的实例分析，总结了孔内强夯法作用原理、施工控制要点和技术优势，表明孔内深层强夯法作为一种地基处理技术，能够较好的消除大厚度湿陷性黄土地基的湿陷性和明显改善地基承载力。
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