洋港泥石流频繁发生，使该地区自然条件恶化，耕地面积缩减，烘涝灾害频仍，人民生命财产遭受严重损失。自１９８３年正式投入治理以来，有效地防治了重大泥石流灾害的发生，保障了当地工农业生产、交通运输、采矿、水利水电建设的顺利进行。本文主要对洋港泥石流的分布、活动规律、成因、危害、工程防治与效益等问题进行了探讨。 The frequent occurrence of debris flows in the ocean ports has led to the deterioration of natural conditions in the area, the reduction of cultivated land area and the frequent occurrence of flood and waterlogging disasters, which have caused serious losses to people’s lives and property. Since it was officially put into operation in 1983, the occurrence of major debris flow hazards has been effectively prevented and the smooth progress of the industrial and agricultural production, transportation, mining and water conservancy and hydropower construction has been ensured. This paper mainly discusses the distribution, activity rules, causes, hazards, project prevention and control and benefit of debris flow in oceanic harbor.