<p>Field seismic observations demonstrate that the permanent ground displacement and near-fault ground motions are usually recorded simultaneously during an earthquake. It is thus crucial for the seismic analysis of near-fault structures to consider the coupling effect of fault dislocation and near-fault ground motion. However, such approach has been neglected in current design due to the lack of available coupled seismic design methods. This paper proposes an Extended Domain Reduction Method (XDRM) for near-fault structures to address the current shortcomings. The proposed method consists of two steps, which covers the entire earthquake process, from the seismic source to the Region of Interest (ROI), where the segment of the fault that ruptures is located. In the first step, the fault rupture generates the seismic motion near the ROI. In the second step, the XDRM is used to convert the seismic motion into an equivalent input for the ROI. The method is verified by comparing its results with those from a free-field model. The comparison shows that the proposed method effectively captures the coupled phenomena of fault dislocation and near-fault ground motion. Additionally, the seismic response of a near-fault tunnel is analyzed. Parametric analyses are presented where the effects on the tunnel-to-fault distance, tunnel burial depth and fault rupture velocity are investigated.</p>