The ocean circulation features are investigated associated with Eastern Pacific（EP）La Niña and Central Pacific（CP）La Niña during seasonal evolution,by using the monthly sea surface temperature from HadISST，reanalysis data from NCEP/NCAR,and the factor of ocean circulation from SODA during period 1951-2011.For EP La Niña，the max centre of negative sea surface temperature anomalie（SSTA）occur over the eastern equatorial Pacific ,for CP La Niña,the negative SSTA centre covers the central equatorial pacific and it’s symmetric about the equator,the different of SSTA between eastern and western Pacific is large. Because of SSTA distribution pattern,the CP La Niña are more intensive and persist longer compared to the EP La Niña. The combined effect of equatorial undercurrent and upwelling leads to the upwelling of cold SST,rising of thermocline and change of salt.These make the thermocline shallower, the sea level lower, and the subsurface SST have stronger cold anomaly during CP La Niña.