Takeing Chinese listed companies from 2017 to 2021 as research samples,the impact of accounting information quality on the company's stock price crash risk was explored. It is found that the higher the quality of accounting information, the lower the risk of stock price collapse faced by the company. Mainly by reducing the degree of information asymmetry between company insiders and external investors, it alleviates the tendency of managers to hide bad news and reduces the possibility of stock price bubbles. From the perspective of management agent, it is found that the higher the management cost is, the more significant the inhibition effect of accounting information quality on stock price crash risk is.