Capital misallocation is a crucial factor that hinders the high-quality development of the capital market. Taking mergers and acquisitions (M&A) cases of Chinese listed companies from 2007 to 2019 as samples, this study finds that there is a mismatch between the target firm’s profit quality and the M&A premium. Moreover, based on the dual perspective of acquirer and target motivations, this study demonstrates that the target firm’s insufficient motivation to improve its information quality is the primary cause of a capital mismatch. Factors that can enhance the motivation of the target, such as improving financial services and facilitating labour flow, are the cure for capital misallocation. It is a crucial study to understand China’s capital misallocation and of great theoretical and practical significance to understand the combination of efficient markets and effective governments in emerging markets.