Abstract: Research of basic software system of blockchain and mapping model between agricultural industry chain and blockchain could solve problems such as long agricultural industry chains, scattered production and operation, lack of smooth supply and sales information, difficulty in analyzing market price data, and increased costs．By combining DCEP digital currency payment method, establishing a sharing and exchange mechanism for agricultural industry chain, creating a unified channel for cross departmental and cross link information interconnection, connecting with third-party blockchain platforms and business management systems, an integrated application of agricultural industry information was formed that reached consensus across multiple parties such as producers, logistics, channels, retailers, regulators, service providers, and consumers．It could achieve transparency, security, and sharing of information throughout entire process of agricultural planting, breeding, processing, transportation, and sales, create an ecosystem for agricultural industry, form a national public chain, promote effective support for agricultural digital assets, and promote development of agricultural specialization, refinement, intelligence, and industrialization．