Importance and development advantage of the Internet of Things industry chain is discussed. The basic ideas and methods of the combination of cloud computing and the Internet of things are described. Combined with cloud computing, the unified Internet of Things operation management system framework is established. The framework of the new platform middleware layer uses the cloud computing technology, which greatly improves the operating efficiency of the Internet of things. Based on the framework, Internet of Things business operations platform construction scheme is proposed, it can be used as reference of the construction of the Internet of things platform design.