职场闲聊作为一种即时互动仪式，在我国组织中的广泛存在性和实践有效性得到检验，但目前鲜有研究探讨其对知识隐藏的影响及作用机制。基于情感事件理论、资源保存理论重点关注职场闲聊对知识隐藏的影响并考察人际信任-心理脱离的链式中介效应。利用367份个体样本进行回归分析发现院职场闲聊对知识隐藏有负向预测作用；人际信任、心理脱离在职场闲聊与知识隐藏之间起中介作用；人际信任-心理脱离的链式关系在职场闲聊与知识隐藏间的中介效应显著。结论不仅扩展了职场闲聊的结果变量研究，同时为组织正视闲聊的积极效用和改善员工知识隐藏提供了实践参考。

Office chit-chat, as an instant interaction ritual, has widely existed in Chinese organizations and its practical effectiveness has been tested. However, few studies explored the influence of office chit-chat on knowledge concealment and its mechanism. Based on affective event theory and resource preservation theory, we focused on the influence of office chit-chat on knowledge concealment and investigated the chain mediating effect of interpersonal trust—psychological disengagement. Regression analysis using 367 individual samples found that: Office chit-chat has a negative prediction effect on knowledge concealment; Interpersonal trust and psychological disengagement play a mediating role between office chit-chat and knowledge concealment; The chain relation of interpersonal trust—psychological disengagement has a significant mediating effect between office chit-chat and knowledge concealment. The conclusion not only expands the study on the outcome variables of office chit-chat, but also provides a practical reference for organizations to realize the positive effect of chit-chat and tackle employees’ knowledge concealment.