Although the product varieties of China's construction machinery industry are diversified, they lack the ability of independent innovation. The data among the blockchain can meet the requirements of investors and creditors and stakeholders for the reliability of financial information. Therefore, this paper takes into account the blockchain technology to explore and study the independent entrepreneurship of construction machinery industry. This paper discusses self-employment in three parts: the basic overview of self-employment in construction machinery, the construction of blockchain system and the analysis of self-employment results. Through the comparative analysis of inventory models, it is found that the information interaction system based on blockchain technology can make collective decisions based on real business information.