[目的/意义] 探究公共数字文化服务供给质量的影响因素，以期为提升服务供给质量提供参考。[方法/过程] 对30位公共数字文化服务用户进行访谈，利用扎根理论方法对访谈资料进行分析编码，并构建公共数字文化服务供给质量影响因素模型。[结果/结论] 阐明环境、平台、资源、活动、服务人员、反馈、用户7个因素对公共数字文化服务供给质量的影响及作用机制，指出用户在感知环境、平台、资源、活动等的供给质量后进行反馈表达，反馈结果由服务人员接收后进行服务完善的过程，是公共数字文化服务供给质量提升的动态循环路径。

[Purpose/Significance] To explore the influencing factors of the supply quality of public digital cultural services, in order to provide reference for improving the supply quality of services.[Method/Process] After interviewing 30 users of public digital cultural services, the grounded theory was applied to conduct analysis and coding of interview data, and a model of factors influencing the supply quality of public digital cultural services was constructed.[Result/Conclusion] The research clarifies the influence and mechanism of seven factors of environment, platforms, resources, activities, service personnel, feedback and users on the supply quality of public digital cultural services, points out that the process of users giving feedback after perceiving the supply quality of the environment, platforms, resources and activities, and then improving the service after receiving the feedback results by service personnel is a dynamic circulation path for improving the supply quality of public digital cultural services.