according to the geologic survey report, the engineering area of an artificial island is characterized by weak soil such as silty clay, clay and silty clay, high dike, tight time schedule, fast construction of embankment and reclamation, as well as ununiform construction speed, so it is necessary to carry out construction monitoring for dike foundation and dredger fill area. The construction is guided and controlled by layered settlement, deep displacement, pore water pressure and other construction monitoring methods, which effectively prevent foundation slide or large displacement, thus ensure the safety of construction and meet the requirement for use. The analysis of monitoring data may serve as reference for similar works.