The creep and creep recovery behavior of concentrated aqueous poly(ethylene oxirle)(PEO) solutions has been investigated at various shear stresses using a stress-controlled rheometer (AR1000). The critical stress to recognize the linearity of creep and creep recovery was determined. In addition, the creep and creep recovery compliances (linear and nonlinear) were examined in detail. Finally, the method to predict the dynamic (storage and loss) moduli using the retardation spectrum calculated from the linear creep compliance was discussed. Main results obtained form this study can be summarized as follows : (1) The creep compliance at small stresses shows a linear behavior. which is independent of the imposed stress magnitude. As the stress exceeds a critical stress, however. a nonlinear behavior is observed. (2) The nonlinear creep behavior occurs when the shear rate is abruptly increased with time. (3) When sufficiently large stress is imposed, the creep recovery compliance has a negative value because only viscous flow occurs during the creep recovery process without elastic recovery. (4) The prediction of dynamic moduli using the retardation spectrum calculated from the creep compliance proves more effective to describe the viscoelastic behavior in terminal region.