In recent years, with the rapid development of China's economy and the continuous development of Internet technology, China has ushered in a "financial boom". At the same time, the financial risks of illegal fund-raising such as P2P online loan platforms have gradually been exposed. In order to effectively warn and prevent these risks, the Beijing Leading Group for the Fight against Illegal Fund-raising and the Technology Company jointly developed the "Smoke Index", and with the establishment of the General Administration of Financial Supervision, financial supervision has increasingly become an important measure to protect financial security in China. This article aims to explore its promoting role in China's financial supervision with the help of the smoke index, and take this as an entry point to provide a new direction for the steady development of China's economy.