This study aims to analyze a derivational domain of secondary predicates. For this, I will focus on the binding condition in adjunct small clause structure. I will investigate the derivational domain formed by secondary predicate and its subject through the possibility of bound interpretation of various nominal expressions derived in secondary predicates. I will propose that secondary predicates are derived on separate derivational domain from main clause`s derivational domain and binding relation supports the fact that secondary predicate and its subject form an independent c-command domain. Furthermore, it is observed that binding relations in some adjunct small clause structures are not compatible with the argument for binding domain of secondary predicates. I attempt to solve this problem supposing the movement of lexical elements or secondary predicate to a position located above the category that represents an assembling of two predication relations.