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In this paper, the sharp threshold of scattering for the fractional nonlinearSchr\"{o}dinger equation in the $L^2$-supercritical case is obtained, i.e., if$1+\frac{4s}{N}<p<1+\frac{4s}{N-2s}$, and $$M[u_{0}]^{\frac{s-s_c}{s_c}}E[u_{0}]<M[Q]^{\frac{s-s_c}{s_c}}E[Q], \M[u_{0}]^{\frac{s-s_c}{s_c}}\| u_{0}\|^2_{\dot H^s}<M[Q]^{\frac{s-s_c}{s_c}}\|Q\|^2_{\dot H^s}$$ then the solution $u(t)$ is globally well-posed andscatters. This condition is sharp in the sense that if$1+\frac{4s}{N}<p<1+\frac{4s}{N-2s}$ and $$M[u_{0}]^{\frac{s-s_c}{s_c}}E[u_{0}]<M[Q]^{\frac{s-s_c}{s_c}}E[Q], \M[u_{0}]^{\frac{s-s_c}{s_c}}\| u_{0}\|^2_{\dot H^s}>M[Q]^{\frac{s-s_c}{s_c}}\|Q\|^2_{\dot H^s},$$ then the corresponding solution $u(t)$ blows up in finitetime, according to Boulenger, Himmelsbach, and Lenzmann's results in [2].

Sharp Criteria of Scattering for the Fractional NLS