This study aimed at conducting an experiment to investigate the impact of digital game-based learning on sight-reading learning for seventh grade students of a high school in Hsinchu County. The experimental group took digital game-based sight-reading learning and the control group took the conventional lecture to learn the same content. Both groups took a sight-reading self-efficacy questionnaire and a pretest for sight-reading ability before the experiment. The same sight-reading ability test was applied after the experiment. The experimental results revealed that digital game-based learning had significantly better effectiveness on sight-reading learning.