Data transmission method and gateway based on data priority

The invention discloses a data transmission method and gateway based on data priority, and relates to the field of data safe transmission of internet of things. After the gateway receives detection data sent by equipment of the internet of things, the detection data are unpacked, and original data collected by the equipment of the internet of things are obtained; the gateway judges the safety priority of the original data according to a predetermined strategy, and if the priority is low, the gateway sends the detection data to a server through a carrying network with a common safety level; if the priority is high, the gateway sends the detection data to the server through a telecom data network. According to the method and the gateway, data uploaded by a sensor network can be unpacked, the safety priority of the data can be judged according to the predetermined strategy, transmission paths are chosen according to the priority, a data pack is uploaded to the server, and high-safety and reliable transmission of the data is guaranteed.