IPO inquiries are one of the key topics of research today. Scholars have identified many issues, but there is still a gap in the research on the correlation between IPO inquiry rounds and performance. Therefore, the research topic of this paper is a study of IPO inquiries in the information transmission, software and information technology services industry. The research methodology of this paper is as follows: firstly, we collect the questions and results of IPO inquiries, screen the data, and then calculate the volatility and the underpricing of each round of IPO inquiries by comparing the data. Finally, the total number of questions asked by IPO companies was counted in order to identify high-frequency key questions. The study finds that IPO inquiries have a significant impact on the timing of IPO, the underpricing and volatility of companies. The study suggests that the enterprises being questioned should do a good job in related areas and improve the quality of information disclosure to reduce the negative impact of IPO inquiries. Regulators should improve the monitoring of information disclosure quality of listed companies to protect investors' rights and interests and enhance the governance role of IPO inquiries in capital market resource allocation. Investors should always pay attention to the process and results of IPO inquiries of the companies they care about, and understand the financial status and management system of the companies through IPO inquiries, so as to facilitate their own investment and protect their own rights and interests.