This study aimed to investigate the effect of using some proposed artificial intelligence activities on enhancing EFL writing fluency and self-regulation for the preparatory stage students in Distinguished Governmental Language Schools. Participants of the study were 33 students in preparatory three from Hassan Abu Bakr governmental language school, Qaluibia, Egypt in the academic year 2021-2022. The researcher's instruments included a writing fluency components checklist, a rating scoring rubric, a pre/post writing fluency test, and a self-regulation scale. The researcher designed and taught a program that included some relevant AI applications such as Minecraft game with grammarly mood, Semantris AI vocabulary game, virtual reality in AI mood, and some relevant Chatbots that enabled the students to practise using English in vivid situations. Participants' scores of the pre and posttest were statistically analyzed using T-test and effect size. The researcher also analyzed the students' writing fluency level qualitatively. Findings revealed the positive effect of using AI applications on enhancing third preparatory stage students' writing fluency and self-regulation.