Frame structuressystems contribute to resist the seismic loads. And there are many techniques used to improve the resistance to lateral loads where steel shear walls,which is embedded within the Frame span, are considered to be one of these ways. This research aims to study the effect of strengthening of the reinforced concrete frames by inserting partial steel plate shear walls, the opening is parallel to beams, embedded within the frame. This study applied numerical analysis using Finite Element Method (FEM) using nonlinear pushover analysis based on geometrical and Material Non- Linear Analysis (GMNLA). Using these methods allow us to study the behavior of the Partial steel plate that seal the whole span of the reinforced concrete frame with opening parallel to beams against lateral loads. This study conclude that using a partial steel plate shear wall, with opening parallel to beams with reinforced- concrete frames can enhance the resistanceand the seismic energy dissipation significantly.