For the deep-sea embankment,monitoring on the horizontal displacement of deep soil is necessary.The automatic survey technology can automatically monitor the sensor readings in a fixed time.If the monitoring interval is 48 minutes,i.e.the delay time of the tide,we can analyze the influence of tide on the horizontal displacement of deep soil in the embankment engineering.Based on the monitoring data of relevant indices of an embankment engineering in Zhejiang province,we find out the influence of the tide on the horizontal displacement of deep soil in the embankment engineering and its law,and put forward the applicable method and case study suitable for similar engineering.