In this note, some comments are pointed out to the paper (Zeng et al. inNonlinear Dyn 67:2719– 2726, 2012). It is shown that the authors in the mentioned paper have wrongly utilized the fractional Ito formula to derive the reducibility conditions of nonlinear fractional stochastic differential equations (SDEs) to linear fractional SDEs. This incorrect use of the fractional Ito formula has led to fundamental flaws in the proposed theorems
