The paper firstly analyzed the three common issues that learners encounter during online learning, namely information disorientation, cognitive overload and discontinuous flow from the perspective of learning psychology in the study. Then, to recommend accurate and essential learning resources to different learners, characteristic information of the learner model in Chinese national standards is extracted. The paper also explained how the characteristic information of learners influences the use and demand of learning resources among different learners as they encounter the aforementioned issues. Finally, the knowledge description frame adding the description of learning suggestion and learners' characteristic information is constructed, in order that the recommendation of online learning resources can be more efficiently improved. In addition, a vision of how the frame can be applied in K12 educational database is provided.