Though net lingo seems to be indiscreet in a sense, it develops with a regular paradigm because it is also a way of communication. The paradigm of net lingo is influenced by people` s consciousness, and this is a main reason why linguists pay their attention to the study of net lingo. This study is about relations between the degree of the productivity of net lingo and the morphological properties of it. The conclusion of this study is described as follows. First, in the formation of net lingo, variations are mainly found in adverbs and exclamations and have high productivity in conjunctions and greeting words. Second, in case that we make new words through compounding or affixation, some specific stems or affixes, including -bang, -jul, or -ding, have high productivity. Third, new words made by root formation are almost symbolic words. Forth, in the formation of net lingo, endings have higher productivity than particles have. Fifth, the variants which add consonants to the end of an ending have difference in their productivity following the order of the consonants, which is `ㅇ>ㅁ>ㅅ>ㅂ>ㅋ`