Massive open online course (MOOCs) is a new teaching and learning mode appearing in the current education field. It has aroused the extensive concern of all walks of life with its "giant" students scale, its "diversity" of students' identity and its "people-oriented" teaching model. Metacognitive strategy refers to that during which students use the knowledge obtained in the cognitive process, set up the learning goals and plans, and monitor the learning process and evaluate the learning results and so on to effectively monitor and control their learning process. This paper puts forward a blending teaching scheme based on the theory of metacognitive, the background of MOOCs, the computer culture and the purpose to improve students learning. Meanwhile, the scheme has also been theoretically evaluated and experimentally proved. It is reasonable and effective.