Since the opening of the Beijing Stock Exchange, the progress of IPO enterprise declaration and examination has been concerned by the market. Since the beginning of this year, the phenomenon of voluntary withdrawal of orders by enterprises listed on the North Stock Exchange has occurred frequently. According to the statistics announced by the Beijing Stock Exchange, the IPO examination of 18 enterprises including Taichuan shares, Green Alliance Intelligence, Hangzhou Road and Bridge and other enterprises were terminated during the year, and all of them voluntarily withdrew their application materials, including 11 in March.