Time delay monitoring method and device

The invention provides a time delay monitoring method and device, and relates to the technical field of communication, and the method comprises the steps: respectively accessing an N3 mirror port and an N6 mirror port of network side equipment through a preset network probe, and capturing M message data packets in the N3 mirror port and the N6 mirror port; monitoring a first round-trip delay between the at least one terminal and the network side equipment based on the M message data packets; under the condition that the first round-trip time delay is not in a preset time delay interval, obtaining timestamps corresponding to each time delay segment of the time delay to be monitored between each terminal and the network side equipment based on the M message data packets; and monitoring the current time delay corresponding to each time delay segment based on the time stamp corresponding to each time delay segment. According to the invention, the network probe is utilized to capture the message data packets in th