[目的/意义]随着数字融入度的提高，部分老年人出现了智能手机依赖行为。文章探究了老年群体存在 性依赖行为的影响因素和后果，进而为促进其更加健康地使用智能手机提供参考。[方法/过程]文章对27位老年 人及8位老年人亲属开展半结构化访谈收集数据，并采用扎根理论进行编码分析。[结果/结论]研究构建了老年 人智能手机存在性依赖的促进和掣肘机制，老年人的智能手机存在性依赖行为是促进因子与保护因子角力的结 果。促进因子包括技术压力、社会文化压力、易感性弱点、情感焦虑；保护因子包括自我控制、数字反哺。此外，老 年人智能手机存在性依赖会引发社会联系减弱、代际关系失调、睡眠质量下降的问题，进一步增强了老年人对智 能手机的依赖。

[Purpose/significance] With the increasing integration of digital technology, some older adults have devel⁃ oped smartphone dependency. This study explores the antecedents and consequences of smartphone existentially de⁃ pendent behavior among older adults, aiming to provide insights for promoting healthier smartphone use among this population. [Method/process] Data were collected through semi-structured interviews with 27 older adults and 8 fami⁃ ly members of older adults. Grounded theory was employed for coding and analysis. [Result/conclusion] The study es⁃ tablishes the facilitating and restraining mechanisms of smartphone existentially dependent behavior among older adults, highlighting the interplay between promoting and protective factors. Promoting factors include technological pressure, socio-cultural pressure, vulnerability to susceptibility, and emotional anxiety. Protective factors include selfcontrol and digital feedback. Moreover, smartphone existentially dependent behavior among older adults can lead to weakened social connections, intergenerational discord, and decreased sleep quality, further reinforcing their reliance on smartphones.