The complex Empirical Orthogonal Function(complex-EOF) analysis is performed on three days’ ocean surface currents measured by two High Frequency Surface Wave Radar(HFSWR) systems located at Fujian province. The results show that the first three modes explain 91%, 4% and 1.4% of the variance, respectively. The cumulative variance reaches 96%, which are the main modes. The spatial and temporal distribution characteristics of mode 1 show that mode 1 mainly contains the information of semidiurnal tidal currents and reflects the information of water depth to a certain extent. Mode 2 mainly reveals the information of wind-driven current and shows the rotary characteristics of ocean surface currents. Mode 3 mainly reflects the information of upwelling currents.