In this presentation, we shall give some new oscillation criteria for the nonlinear fractional order integro-differential equations with forcing term $v(t)$ of form \begin{equation*} D_{a}^{\alpha }x(t)=v(t)-\int_{a}^{t}K(t,s)F(s,x(s))ds,\ 0<\alpha<1,\ \underset{t\rightarrow a^{+}}{\lim }J_{a}^{1-\alpha }x(t)=b_{1}, \end{equation*} where $v,\ K\ $and $F$\ are continuous functions, $b_{1}\in$, and $D_{a}^{\alpha }\ $and $J_{a}^{1-\alpha }$ denotes the Riemann-Liouville fractional order differential and integral operators respectively.