The purpose of this paper is to compare the category of modality with that of 'Bunmatsu-shi (文末詞)'. Most of modal elements appear at the final position of sentences in Japanese. In the study of current Japanese, the notion of modality is applied to standard Japanese (共通語). 'Bunmatsu-shi' is a technical term introduced by Y. Fujiwara in dialectology of Japanese. 'Bunmatsu-shi' means a part of speech to express respect to a person at the final position of sentences. Modal elements and 'Bunmatsu-shi' have the same features in its position and function. But 'Bunmatsu-shi' has more different styles in dialects than in standard Japanese. Therefore, function of each element in 'Bunmatsu-shi' has not been studied well, unlikely 'NE (ね)' and 'YO (よ)' in standard Japanese. If the two fields, modality and 'Bunmatsu-shi', should be combined and be related each other as a target of the study, it will make a great progress in the study of Japanese.