Method, device and system for decoding depth message detection protocol based on stream

The invention provides a method for decoding depth message detection protocol based on stream. The method comprises the following steps: receiving service data stream, and allocating different data streams to different threads for processing; identifying the protocol type of the allocated data stream, and allocating the same data stream to the same depth message detection processing module; and calling a regular expression rule base to carry out protocol decoding for the data through the depth message detection processing module. In addition, the invention also provides a device and a system for decoding the depth message detection protocol based on the stream. The method, the device and the system improve the decoding speed, meet the real-time decoding requirement, reduce the demand on a server memory, and lower the cost.