Abstract: The singular integral equations with Cauchy kernels
a(t)φ(t)+b(t)/πi∫_Γ φ(t)/(τ-t)dτ+(Tφ)(t)=f(t)
have studied in L_p(Γ),∀p > 1,in detail.Here Γ stands for the set of a finite number of closed Liapunoff's curves which have no common points and T denotes the completely continuous operator in the space sunder consideration. In this paper, we consider the equations mentioned above in Orlicz spaces L_M(Γ). It is proved that the Nether theorem and the index formula are hold true in the case of reflexive Orlicz spaces.