The formulation for waves propagation in a multilayered structure with an anisotropic layer is very complex, which results from the diversity of interfaces and the specifienessof physical properties of anisotropic medium.For this issue, based on the transfer matrix method, the expressions of reflection and transmission coefficients for SV wave and SH wave of the lowest order mode are deduced under the assumption of rigid connection, where a three-layer structure with only orthotropic middle layer is considered.