Abstract: Architectural past periods of Iran were always inspired by the use of geometry and rich and detailed drawing practices. So far, knowledge of the mathematics rules and drawing and the use of specific types was the duty of every architecture and beyond it, the engineering knowledge and knowledge of geometric means and the distinction between architects and their competition with each other has been based on the same axis. That is why you can see, a variety of geometric relations, details and decorations have been respected. One of these relations is symmetry, according to Antonio Palladio, the need for symmetry to coordinate has no place for the question and is considered as one of the aesthetic principles, although it is essential to say that symmetry argument cannot be proposed apart from the balance. The purpose of this study is to examine the concepts of balance and symmetry, in traditional Iranian architecture with the residential architecture approach of Iran. In this study, after defining the order, aesthetic, balance and symmetry, we will study the symmetry in the world and Iran architecture and then we will provide reasons for symmetry use in Iranian architecture will explain the use of balance and symmetry in Iran traditional home architecture.