The objective of this study is the to clarify Functional·Typological features of SNS Hashtags with the Textlinguistic analysis. For this purpose, I confirmed that SNS hashtags are Text, I identified typological features of SNS hashtags through analysis based on morphological·semantic·functional features. As a result of the analysis, I confirmed that SNS hashtags are both Text and Subtext. Also I confirmed that SNS hashtags have ‘#+Grammatical/ Extra-grammatical unit’ morph and that SNS hashtags meaning could figure out through context. SNS hashtags function could be classified to function as text and function as subtext. And SNS hashtags could be classified to detail type based on morphological·semantic·functional features. In conclusion, I could find that SNS hashtags had multi-fuctional characteristics through textlinguistic analysis. In this regard, this study will contributes to identify the Effectiveness of functional·typological research on SNS hashtags.