Nowadays, YouTube is growing so fast that almost all people watch YouTube and make videos on YouTube. The content creator on YouTube is called YouTubers; they produced some kinds of video individually on their self YouTube channel such as podcast, prank, music, sport, and vlog videos. Meanwhile, the mainstream media like TV companies and journalism media have their own YouTube channel. They televise the program on TV and after that, they also posted the program on their YouTube channel as a kind of promotion and business This current study is an experimental method with a quantitative and qualitative approach. The first step is a pre-test, the second is a treatment by teaching speaking by using an English vlog video on English YouTube Channel for a month; consists of 8 meetings or every week has 2 meetings, and the third is a post-test. The researcher use a paired-sample t-test to get accurate data on different student’s scores before and after treatment. And the last is the interview. This study consists of 30 students from the intermediate level at Bata-bata English Centre (BBEC). The researcher use oral tests to make sure the improvement of student’s speaking fluency, and paired-sample t-test through IBM SPSS Statistics 20 to get accurate data of different student’s scores before and after treatment and interview to know student’s perception, and the last the researcher use joint displays comparing results and outcomes for students’ perception and satisfaction table to know the correlation between the scores and the interviews. The results showed a statistically significant link between the two time points. P-value = 0.000 0.05 indicates that the significance value estimated at 0.000 is less than 0.05. Additionally, the student's perceptions throughout the interview support it. The study's findings support Ruslan's (2021) idea that using YouTube videos to teach speaking might boost students' enthusiasm and communication skills. In conclusion, watching English vlog videos on Youtube increases students’ speaking fluency. It is proven by 22 students was increasing their scores after the treatment, and just 8 students were not increasing their scores after the treatment. Lastly, here the researcher would like to suggest to be active learning English through technology like watching English videos on Youtube because it is very important and useful to increase speaking skills, especially speaking fluency. Keywords: English Vlog Video, Youtube, Speaking Fluency