The embodiment of the invention provides a method and device for determining a network performance jitter value, and relates to the technical field of the Internet. The embodiment comprises the following steps of acquiring a plurality of network performance parameters belonging to the same type between first equipment and second equipment in a preset period; and determining a first performance parameter and a second performance parameter according to the plurality of network performance parameters belonging to the same type, and determining a network performance jitter value between the firstdevice and the second device according to the first performance parameter and the second performance parameter. The network performance jitter value calculated by the method for determining the network performance jitter value provided by the invention is more comprehensive, so that the network performance stability between the first equipment and the second equipment can be comprehensively monitored.