The tidal data harmonic analysis and prediction was compared with the measured data for one month with the tidal data analysis theory. The coefficient of determination and variance calculations analysis was given also. The MATLAB Curve Fitting Toolbox can be good enough to realize the harmonic constants calculation. The forecasting results by the established short-term forecasting models were consistent with the experimental data. Meanwhile, the unexpected weather system interference would cause large deviation in the measured tide. Preliminary view is that this method can be used as a practical method used in the analysis and forecasting of short-term tidal data, and have some reference value for the long-term forecasting applications.