Taking soft Fangcheng river benchland subgrade treatment of Datong airport jointing line as an example,combining with engineering geology conditions,the paper briefly introduces the soft benchland subgrade processing method by combining dump-filled flay with geotextile,dis-cusses specific construction points,and analyzes its processing effect. In the end,it points out its advantages,such as simple construction,con-venient material selection,and rational economy. Thus,it is worth promoting.%以大同市机场连接线坊城河河滩软土路基处理为例，结合工程的地质条件，简要介绍了抛填片石和土工织物相结合处理河滩软土路基的方法，主要对具体的施工要点作了论述，通过对处理效果的分析，指出该处理方法施工简单、取材方便、经济合理，值得推广。
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