At present，blockchain technology has become an important force driving product innovation and industrial transformation in various industries. The broad development prospects have not only attracted the attention of the market，but also received extensive attention from the government. The development of the bidding industry for more than 30 years has highlighted many industry pain points such as performance fraud and trust islands. Based on its technical characteristics，blockchain is the only feasible way to solve the industry’s pain points. The transaction platform and transaction subject are involved in the bidding transaction process. Since the transaction process needs to be supervised by the government，it is more suitable to use the alliance chain. is the country’s first bidding and procurement industry alliance chain. provides a five-level alliance node system，a three-tier business chain system，and independent expansion of alliance chain infrastructure such as industry chains and regional chains，and through interconnection Docking the judicial chain，creating a “full chain，judicial connection，and vertical integration” of the tender and procurement industry alliance chain governance system. Zhongzhao Public Credit Chain has established a blockchain alliance system constructed by 8 first-level node alliances，multiple second-level nodes，and many third-level nodes. It has the advantages of national industry status，industry standard compilation advantages，and domestic independent controllability advantages. With the advantage of secondary nodes of the judicial chain，it aims to build the country’s largest and most extensive industry alliance chain network system，help the industry to trade with integrity，and optimize the market business environment.