This study is to identify in what ways language standardization is developing in view of the standard language-based education and media development that is encouraging a standard language, and the ways in which the language attitudes of speakers using dialects have a continuous and comprehensive influence on the dialects. The survey was conducted with 134 speakers in their twenties in Busan, who were selected using the judgement sample method. The standardization of Busan dialect vocabulary and their language attitudes were analyzed.BR The survey showed that out of forty-one dialect vocabulary items related to ‘human body’ and ‘food’ the only items of which over 50% of Busan speakers in their twenties were aware were ‘ko-kku-nyeong, gung-di-i, kko-rang-nae, dan-sul, jeong-gu-ji, and nu-run-bap’. This suggests Busan dialect vocabulary is rapidly being standardized. BR The survey on language attitudes was conducted to understand how the speakers perceive the Busan dialect and the standard language as a mother tongue dialect, and what kind of attitude they take in selecting languages. Speakers apply intellectual and emotive values towards language. It was found that the speakers in their twenties in Busan belonged to the ‘confidence-type’ with high intellectual and emotive values towards the Busan dialect as a mother tongue dialect. Nevertheless, there is a high rate of standardization of dialect vocabulary, and the disappearance of dialect can be attributed to the standard language-oriented teaching style. To solve this problem, we need to look at the language from an eco-linguistic perspective.