Abstract: Single channel seismic detection technology is widely used in various fields of marine exploration. Tidal variation has a significant effect on the quality of high-resolution single-channel seismic data. Data with a large acquisition time span often have non-closure of profile at the intersection of survey line. A tide prediction method was used to correct high-resolution single-channel seismic data and the data quality were improved obviously. By comparing profiles at intersection of different survey lines, the non-closure problem was eliminated, and the corresponding events become more continuous. Real case application showed that the tidal correction method based on tide prediction was effective and reliable in high-resolution single-channel seismic survey.