This study mainly investigates the collaborate patterns of Arctic sea ice and sea surface temperature (SST) anomalies, which are closely related with the East Asian winter climate. It is more consistent with the actual situation to study their coordinated role than individual roles. Firstly, the influences of sea ice and SST anomalies on the atmosphere are simultaneous in the observation. Furthermore, because their influences are nonlinear, the total role can not be interpreted by the linear sum of their sole impact. Hence, it is meaningful to consider the two as one unity for improving the short-term forecast. Based on the observational data, the combine patterns of Arctic sea ice and SST anomalies associated with the East Asian winter climate will be investigated by statistical analysis. Then, using the atmospheric general circulation model, the impact of sea ice and SST anomalies will be analyzed, and the differences between their coordinated role and the sum of individual role will be checked. Finally, we will examine the mechanisms by which they influence the atmosphere, and the discrepancy between the mechanisms of combined and individual effects.