The present invention provides a delay measurement method of a network node device, a delay measurement apparatus, and the network node device. The delay measurement apparatus separately performs corresponding delay measurement on a node delay value generated when a packet is transmitted from an ingress port of the network node device to an egress port of the network node device. Serviceability, availability, and reliability of delay performance of the network node device can be evaluated based on obtained delay measurement data. Therefore, precise quantitative evaluation and monitoring of delay reliability of the network node device can be completed based on comprehensive delay measurement data.