College English in China has shifted from cultivating reading ability to comprehensive communicative abilities with an emphasis on listening and speaking. For this reason, new teaching models should be built on modern information technology. However, little research on developing models for the online teaching of listening skills has been conducted. Thus, the present study aims at developing an instructional model for online task-based interactive listening (OTIL Model) for English as a Foreign Language (EFL) learners and investigating the effects of using OTIL. First, researcher constructed the OTIL Model by analyzing and synthesizing four effective and manageable instructional design models. Subsequently, three experts in the field of instructional systems design and English language teaching evaluated the OTIL Model. Next, two non-English major intact classes at Tongren University, China (TU), were employed in the experiment by using OTIL designed based on the developed OTIL Model. Additionally, the results of the two classes were compared by pre- and post-tests, revealing a significant difference in the post-test score between the experimental and control classes (P = 0.000, P =0.05). The results seem to suggest that the OTIL Model can be served to promote students' listening ability.