This paper is part of the researcher's Ph.D. thesis to deploy and develop the potential of genre-based pedagogy of systemic functional linguistics to support business-major English language learners' development of persuasive strategies in the written discourse of online advertisement. Given the "value" of netvertisement in motivating consumption, it is vital for non-native English speakers preparing to participate in international e-commerce to take control of the current genre. The research question is how a genre-based writing class can promote students' persuasive netvertisement with appropriate vocabulary, text organization, and strategies of engagement, graduation, and manipulation of information packaging. This paper describes an instructional intervention in Chinese vocational college using genre-based Curriculum Cycle to involve 51 student participants--coming from two classes--in the learning and teaching of persuasive netvertisement. Results identified the significant improvement between pre-and post-tutorial with Wilcoxon Test. Meanwhile, textual analysis of the two randomly selected writings supported the effectiveness of the intervention in terms of the reduced listing of phrases, expanded vocabulary to describe a broader range of products, and improved use of persuasive strategies of engagement (e.g., questioning), graduation (e.g., the metaphorical scenario in image design), and manipulation (e.g., use of subtitling, varied thematic structures). The findings indicate the potential of a genre-based approach in promoting college students' persuasive practices in netvertisement writing.