Knowledge visualization has become the development trend of the current era. Based on the "visual teaching", this work explored the visual teaching of senior high school information technology courses, conducting teaching design and practice based on knowledge visualization. This work studied and analyzed students' information literacy, achievement and classroom performance through a questionnaire survey, observation and statistical analysis, so as to provide some references for future teaching. The work found that knowledge visualization teaching has a significant effect on improving students' academic performance, students' enthusiasm of learning, and students' classroom participation. However, the information literacy of students is a process of continuous accumulation. Short-term teaching has a certain effect on the improvement of students' information literacy, but the effect is not obvious.
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