This study intends to investigate the phenomenon of Self Confidence that can be related to Speaking About Describing Thing. The purpose of this study is to find out whether there is significant Correlation Between Self Confidence and Speaking about Describing Thing of The Eleventh Grade Student of SMK Negeri 1 Abung Selatan Academic Year 2023/2024. The kind of this research is quantitative research and used correlation research design. The population consisted of 228 students’. This research applied slovin formula to determine the research sample. The sample was taken 15% of the population from each class, so the total sample was 37 students’. The instrument used in this research were questionnaire and oral test. Then, to fullfit the hypothesis of the research, the researcher analyzed data by using the pearson product moment and resulted Robserved = 0,605 then, resulted the value of Tobserved > Ttable was 4,49 > 2,03. Based on the result data analysis, it is concluded that Ho was rejected and Ha was acceted, it means that there is a significant correlation between self confidence and speaking about describing thing.