This study reports a university-based ESP blended educational experiment on self-developed Tianfu SPOC. The paper first analyzed and concluded the typical feature of them. Then it applied the theories of Cognitive Linguistic into the discussion of ESP blended course design and assessment mechanism. The results shows that within the needs-oriented ID framework, the content-based practice competence can be realized by integrating the content-based knowledge with the language application, and by developing the teaching and learning centered instruction mode. It is hoped that the new model can further promote the increasing integration of cognitive linguistic theories, contemporary information technology, and ESP teaching reform. Moreover, it can throw some new light upon ESP teaching for the people who work on it.