Abstract. In view of the problems of the mismatch between the way of knowledge expression and the essential goal of teaching in network-teaching applications, based on the nature of teaching, this thesis analyzes the essential differences between network teaching and traditional teaching and the inelasticity of the existing knowledge representation to the network teaching. Based on this, a new knowledge model for the training of cognitive ability, schema and schema construction methods is proposed. The related concepts are discussed and the visual modeling and implementation are given. The new knowledge model implements a unified description of the basic knowledge and the pattern knowledge and supports the construction and application of these two types of knowledge. Finally, combined with a specific instance, the role of the pattern knowledge in teaching process is expounded and the basic application of this knowledge model is realized.