Abstract: Results from simple dynamic studies on the role of evaporation-wind feeback have shown that the mechanism does not act like Wave-CISK to change the nature of tropical atmospheric wave motion (by retardation of its speed),or, is not all by itself a dynamic intriger of intraseasonal oscillations of tropical atmosphere.With combined effect of cumulus convective heating and evaporation-wind feedback,CISK-Kelvin waves and CISK-Rossby waves develop unstably, accounting for the intraseasonal oscillations in a way more completely and reasonably than the feedback of cumulus convective heating alone. It is therefore obvious that the evaporation-wind feedback is also important to the intraseasonal oscillations of the tropical atmosphere.