The main purpose for this study is to clarify the case marking realization of KSL by the comparative analyzing with Korean. Both language have the common characteristics that they have their case maker, the typical word order is Subject + Object + Verb(SOV) and all modifiers precede the nouns the modify. But on the other hand the two languages have the different case marking systems and the grammatical case maker of KSL would be use in Korean sentence is translated into the KSL. The case marking realization patterns of KSL are the case makers, the word order and the syntax relation of predicate verbs. One of the major differences between the two languages would be KSL have agreement verbs. The agreement verbs of KSL agree with its subject and object in person. Moreover, the case of KSL can be realized by combination of immediate constituent simultaneously.