In order to guide and promote the trading and circulation of data elements, and promote the healthy development of the data trading market, a new quality productive forces "new quality" analysis framework was constructed, and based on this framework, the new quality characteristics of data elements and market development laws were analyzed in depth. The factors that restrict data trading and smooth circulation were deeply explored. The study showed that the trustworthy mechanism is a key link affecting data trading circulation, and credit management for data trading is the future development direction. This system draws on mature experience in credit supervision in other fields, aiming to guide the behavior of all parties involved in data transactions through credit management systems, and solve the problems of insufficient and irregular development of the data element market. The results indicate that building a credit management system for data transactions can ensure the fairness and transparency of on exchange transactions, guide more data transactions to be conducted on the exchange, reduce the risks caused by information asymmetry in off exchange transactions, enhance trust between trading parties, reduce fraudulent behavior, help promote the trustworthy trading and circulation development of data elements, and provide institutional guarantees for the efficient development of new productive forces.