The water stopping effect is the key point of the project on the construction of deep foundation pit in highly permeable stratum,and the water-stopping method has a great impact on the safety,progress and cost of the project.Based on the study & comparison of foundation pit’s water-stopping construction methods of the foundation pit of the coal-containing sewage treatment pond in SG-03 section of Jinzhou Port coal terminal phase I project,we know that the bored interlocking pile has obvious advantage in construction progress,quality control,economy,etc.on the construction of the deep foundation pit in coastal highly permeable stratum such as bored interlocking pile,high-pressure jet grouting wall,plastic concrete cutoff wall and clay core wall,etc.Based on the discussion of the adaptability and construction control points of the bored interlocking pile,we point out the problems occur possibly in actual operation and propose treatment measures.The result shows that the bored interlocking pile achieves a perfect effect on the construction of deep foundation pit in highly permeable stratum.