This paper reviews the research progress of ocean feedback to atmosphere in recent 10 years.Some main issues are addressed for further study,such as how to separate individual ocean influence on atmosphere anomaly in the observational researches effectively.Traditionally,the linear regression or partial correlation method is used to filter out the main interference factor.However,the method is valid only at the condition where we know the factor in prior,e.g.the ENSO signal is removed before assessing the ocean feedback in the mid-latitude.How about the other remote influence from the unknown ocean? A new method,the generalized equilibrium feedback assessment(GEFA),is used to separate each contribution of the individual ocean forcing automatically,without any prefiltering.Its validity is preliminarily proved in a simple thermal model and observations.Therefore,GEFA provides a useful tool for assessing the ocean feedback to the atmosphere.