The invention discloses a valve remote fault diagnosis system based on the IOT (Internet of Things) technology. An intelligent valve terminal communicates with main control equipment through a zigbee network, and the main control equipment communicates with a remote monitoring platform through the Internet. The intelligent valve terminal comprises a sensor module, a data collection module for collecting a sensor signal, and a zigbee module for sending the signal. The main control equipment comprises a zigbee module for receiving a zigbee network signal, and a GPRS module for transmitting the signal. The remote monitoring platform comprises a database module, a real-time display module for the real-time display of the data, and an alarm module. The sensor module comprises a pressure transmitter, a valve rod position sensor, a temperature transmitter, a VOCs sensor, and a valve rod torque sensor. The system is low in cost, is high in practicality, and is high in efficiency.