Hong Mi-ju. 2014. A Study of phonological variation and Language Attitude of Word-initial tensification. The Sociolinguistic Journal of Korea 22(1). The purpose of this study is to contemplate the correlation between phonological variation and language attitude. It focuses specifically on explaining the phonological variation of word-initial tensification and Language attitude of variant [fortis]. Data have been collected from 30 informants who live in Daegu through interviews and questionnaires. This variable is examined and analysed to see how the variants are realized depending on the factors of informants' age and gender. The phonological variation based on the age and gender of word-initial tensification and language attitude of variant [fortis] are summarized as below: Fortis realization rate in word-initial does not have any significant value for age and gender. However, fortis phenomenon in word-initial is quite prevalent. Language attitude of variant [fortis] for age and gender does not have any significant difference. The greater number of speakers have positive attitude of variant [fortis]. The greater number of informants express willingness to support realization of variant [fortis] Several observation in few paragraphs have shown that if the speakers' s language attitude of a variant is positive, realization rate of a variant is more frequently. These result lead to the conclusion that there is correlation between phonological variation and language attitude of word-initial tensification.