The supply chain is composed of parties that directly or indirectly fulfill customer needs, including not only manufacturers and suppliers, but also transporters, warehouses, retailers, and even customers themselves. The supply chain includes all functions to accept and meet customer needs. This article aims to study the application of intelligence based on the Internet of Things in supply chain adaptive operation decision technology and optimization algorithm models. This paper proposes a supply chain information system based on the Internet of Things technology, operational decision-making model algorithms, Web service technology and information management and support systems, multi-level structure model construction of port logistics supply chains, collaborative supply chain theory and models, and port supply under the Internet of Things Chain service quality evaluation index system, and then analyze the working capital management status and inventory decision value of the production link to explore the application research of the Internet of Things applied to the supply chain decision-making technology. This paper uses 14 standard calculation formulas, and the final experimental results show that through the use of a supply chain information system based on the Internet of Things technology, the supply chain operation decision-making technology can operate efficiently.