The invention relates to a multifunctional Internet of things (IOT) intelligent home monitoring system. The system is technically characterized by being formed by connecting an intelligent gateway control machine, a community monitoring network, a company monitoring network, an access control monitoring system, a home control system, a security monitoring system and a control terminal, wherein the intelligent gateway control machine is connected with the community monitoring network, the company monitoring network, the access control monitoring system, the security monitoring system, the home control system and the control terminal through Internet, a cable television network or a telephone network. The system disclosed by the invention effectively integrates monitoring, IOT and home control together, realizes monitoring functions on the community monitoring network, the company monitoring network, the access control monitoring system, the home control system and the security monitoring system through the intelligent gateway control machine, supports communication functions comprising a local area network, a wide area network, a wireless communication network and the like, has the characteristics of simple structure, strong function, low cost and the like, and meets the technical requirements on current national popularized mutual network fusion.