<p>The dynamic behavior of nano-inclusion is an important issue in material engineering. In this paper, the scattering theory of SH waves is adopted to study the dynamic stress using the surface/interface effect. An analytical solution is obtained to get the dynamic stress concentration factor around a semi-circle nano-inclusion embedded in a half-space surface. The simulation results are depicted graphically considering various medium parameters. The result shows that when the surface nano-inclusions are added, the rigidity ratio between the medium and the inclusions should be considered. Meanwhile the dynamic behavior of the medium is greatly dependent upon the size of the added nano-inclusions.</p>