基于2010～2022年中国沪深A股上市公司数据，考察数字化转型对企业闲置固定资产的影响及作用机理。研究发现，企业数字化转型与闲置固定资产呈倒U形关系。机制检验表明，数字化转型通过影响固定资产利用率、固定资产更新改造投入以及固定资产处置速度作用于企业闲置固定资产。异质性分析表明，当企业业务复杂程度较高、隶属于非劳动密集型行业以及位于东部地区时，数字化转型对企业闲置固定资产的盘活作用更显著。进一步研究发现，数字化转型对企业闲置固定资产的盘活能够促进企业固定资产投资。

Based on data from Chinese A-share listed companies on the Shanghai and Shenzhen stock exchanges from 2010 to 2022, this study examines the impact and mechanism of digital transformation on idle fixed assets of enterprises. The study finds that digital transformation and idle fixed assets of enterprises exhibit an inverted U-shaped relationship. Mechanism analysis shows that digital transformation affects idle fixed assets of enterprises through its impact on fixed asset utilization, investment in fixed asset renewal and in reconstruction, and the disposal speed of fixed assets. Heterogeneity analysis indicates that when enterprises have a higher level of business complexity, belong to non-labor-intensive industries, and are located in the eastern region, the effect of digital transformation in revitalizing idle fixed assets is more significant. Further research finds that digital transformation’s revitalization of idle fixed assets further promotes enterprise fixed asset investment.