The present invention discloses a room environment remote monitoring system. The system comprises a display device, an upper computer, an alarm device, a remote communication device, a control device, a humidity monitoring device, an air pressure monitoring device, a temperature monitoring device and at least on temperature monitoring set. A star topology structure is employed among the control device, the humidity monitoring device, the air pressure monitoring device, the temperature monitoring device and the temperature monitoring set, the control device is taken as a center node to connect with the humidity monitoring device, the air pressure monitoring device, the temperature monitoring device and the temperature monitoring set and the temperature monitoring device, the controller and the temperature monitoring set form a closed-loop control system, and the upper computer is taken as an open-loop module for remote control. The room environment remote monitoring system can perform remote control of a monitoring device, has high safety and can perform multi-point monitoring as required and single-point monitoring when not in use so as to save energy; and moreover, the room environment remote monitoring system employs a star topology networking to perform monitoring and positioning of a single node while controlling multiple devices.