The fishing data of O.bartramii from 150°E -165°E, 39°N-45°N in the northwestern Pacific Ocean from August to October from 2004 to 2015 were used. The interannual and seasonal variations of gravity centers of the fishing ground and its relationship with marine environment were studied. The influences of abnormal climatic events on sea surface temperature (SST) and the fishing ground's gravity centers were evatuated. It was found that the appropriate SST range of fishing ground for O. bartramii is 13-22℃, which decreased month by month. The interannual and seasonal variations of gravity centers of the fishing ground were significant, and the seasonal variation is consistent with the migration route for O. bartramii. The clustering results of the center of gravity of fishing grounds in each month are divided into three categories, which corresponded to normal climatic conditions, La Niña events and El Niño events, respectively. Abnormal climatic events change the range of cold and warm water in the fishing ground of O. bartramii, thereby changing the distribution of the appropriate temperature range, and eventually moving the gravity centers of the fishing ground along northeast-southwest direction. When the El Niño events occurred, SST in the study areas decreased and the gravity centers of the fishing ground shifted to the southwest. When normal climate conditions and the La Nina events occurred, SST in the study area increased and the gravity centers of the fishing ground shifted to the northeast.