At present, some explorations on teaching content, teaching strategy and teaching means become the urgent needs to improve the teaching quality of concrete structure. Along with the popularization of mobile internet and smart phones, micro blog has wide application areas and long term application prospects in assisting classroom teaching as an interactive platform which is acceptable by college students. The promotion of micro blog interaction to the teaching of concrete structure was investigated based on the practice of applying micro blog in the teaching of concrete structure. The practice result shows that students have a high approval on the “classroom teaching and micro blog assisting” mode, a clear improvement on mastering basic concepts, and a reinforced comprehension about the difference and connection between books and codes. Meanwhile, the differential learning is achieved and the communication ability is enhanced.