This paper highlight, the techniques used to analyses symmetric structures subject to general loading. After an extensive review of previous work in this field, the paper introduces the most public way of structure analysis, based on conventional three methods which is force, matrix stiffness and column analogy techniques. It shows how this approach can systematically simplify a structural analysis and clarify a technique which is best known to structural engineers. For each method, a portal symmetry plane frame considered for analyzing with an explanation of the analysis calculation procedure, and it also shows that the influences of symmetry can observe and utilization in different methods to simplify the analysis procedure.