Light Steel Frame System that is briefly called LSF is a building system which is used for implying of short-rise and mid-rise buildings (up to 5 floors). It's a desirable building system for civil engineers (in terms of gravity and lateral load) in developed countries. Despite the relatively significant growth of LSF structures during the last decade in our country, the studies in this field have been still done neither in our country nor in abroad. In this article, we try to study LSF structures from the design and implementation stages to the operation one and identify its risks exactly and finally offer a solution with classifying and prioritizing them.