Korean and Mongolian languages are agglutinative language and have developed into affixes. Among the derived affixes ``-hada`` and ``-хий(hii)`` are to be compared in terms of their origins, functions, forms andsemanteme.``-hada`` and ``-hii-`` suffix can be found in the company of origin ``ㅎ다``, ``гэ-, хэмэ-``, affixes are derived from the verb ``ㅎ다``, ``гэ-, хэмэ-``, or it can be said as the result of the developmental process of the verb ``ㅎ다``, ``гэ-, хэмэ-``. In addition, when compared the ``-hada`` and ``-hii``-, the similar functions, forms, and meaning can be seen. Therefore ``-hada`` and ``-hii-`` suffix can be said that they might be developed from the close sources.
