It is useful to develop students＇ meta-cognitive ability to improve students＇ learning ability and efficiency. More scientific teaching models are more effective to improve cognitive ability. This paper analyses and discusses the role played by the case of model-based computer teaching to cultivate students＇ cognitive ability from the three aspects： teaching characteristics, teaching mode, case design. And discusses the teaching strategies to cultivate the students＇ cognitive ability in the case of model-based computer teaching.