Due to the influence of psychology and cognitive science, personalized learning has gradually drawn the attention of many researchers. The purpose of this paper is to research an acceptable personalized learning method for learners. In this paper, we perform a study by literature review from four aspects. Firstly, we construct learner model based on learner's learning style and cognitive ability. Then, we introduce the process of personalized learning in online learning environment. Moreover, we propose the way of information presentation by knowledge visualization, and pose corresponding inte...