The purpose of this study is to deliberate on design application for a structure of beam with partially restrained composite connection to CFT column. It was intended to apply an economic and stable component by adjusting stiffness ratio of column connection through partially restrained composite connection. As a result of the review of stability of the structure, it was confirmed that in case of a low-rise building as a moment frame, it could be resisted without brace, as stiffness was increased when taking advantage of partial restrained composite connection by composite action.