目的 分析混合式教学学习投入度及其影响因素，为优化混合教学模式提升学习投入提供参考。 方法 通过问卷调查获取学生学习投入度数据，采用多元线性回归模型分析学习投入的影响因素。 结果 课程开展混合式教学后，学生总学习投入度和6个子维度得分均较高；学习投入度与学业成绩成正比，但差异无统计学意义。多元线性回归分析显示，学生对混合学习的自我效能、对混合式教学资源呈现和传递方式和混合学习的收获感的满意度与学习投入度呈显著正相关。混合式教学7个方面的满意度分别显著影响不同的学习投入的子维度。 结论 混合式教学能有效促进学生学习投入度。在进行混合式教学设计时，应注重教学平台的选择、教学内容重构、在线教学资源建设、教师教学能力培养和过程性评价指标的客观设计与解读。

Objective To analyze the engagement in blended learning and its influencing factors to provide references for optimizing the blended teaching model and improving learning engagement. Methods Student engagement and related data were obtained through a questionnaire survey, and multiple linear regression models were used to analyze the influencing factors of learning engagement. Results After implementing blended learning in the course, students showed high engagement scores in all six sub-dimensions and total learning engagement. Learning engagement was positively correlated with academic performance without significant statistical differences. Multiple linear regression analysis showed that students' self-efficacy, the presentation and delivery of resources, and the perceived gains were significantly positively correlated with learning engagement. Satisfaction with seven aspects of blended learning significantly influenced different sub-dimensions of learning engagement. Conclusion Blended learning effectively promotes students' engagement. When designing blended learning, attention should be paid to the selection of teaching platforms, reconstruction of teaching content, development of online teaching resources, training of teachers' teaching abilities, and the objective design and interpretation of process evaluation indicators.