The purpose of this paper is to elucidate the grammatical properties of conjunctive ending ``-neurago`` in a more accurate way as the advanced researches have had the study of the syntactic constraints and semantic analysis of ``-neurago`` separately. Through the dates of Sejong Corpus, we know that the syntactic restriction of ``-neurago`` is closely related with the meaning of it. According to the meaning, the syntactic constraint can be changed differently. So put the syntactic constraints and semantic analysis together is very necessary in the study of grammatical properties of conjunctive ending ``-neurago``. As to clarify the relationship between syntactic constraints and semantic functions of ``-neurago``, by analyzing the dates of the Sejong Corpus, we acquire that the semantic function of ``-neurago`` can be understood in terms of [reason], [purpose], [simultaneity] and [the change of state including supposition]. Therefore as taking the semantic functions of ``-neurago`` into consideration, we see there are differences turn up in the syntactic constraints of ``-neurago``. First, when the conjunctive ending ``-neurago`` used with the meaning of [reason] or [simultaneity], there is no constraint about the accordance of the subjects between the antecedent clause and following clause, but when the conjunctive ending ``-neurago`` used with the meaning of [purpose], the accordance of the subjects between the antecedent clause and following clause is demanded. All the more when the conjunctive ending ``-neurago`` used with the meaning of [the change of state including supposition], the subjects between the antecedent clause and following clause should be different. Second, related to meaning of the following clause, it shows an upward tendency that when the conjunctive ending ``-neurago`` used with the meaning of [reason] or [simultaneity], the content of the following clause should contain negative meaning while ``-neurago`` used with the meaning of [purpose] or [the change of state including supposition], there is no such constraint.