The invention belongs to the technical field of vehicle-mounted information networks, and particularly relates to a method for measuring delay information in an exchange type vehicle-mounted data network. The method comprises an initialization process, a delay estimation process, a measurement process and a calculation and storage process. According to the scheme, based on an exchange type network, data packets and time-containing information data packets are interacted between measured devices by using measurement equipment, transceiving time information is recorded, and the delay time of data transmission between the measured devices and the synchronization difference between the measured devices are obtained through calculation. The method has the beneficial effects that the data transmission delay time between the two tested devices can be monitored in the switched network, the transmission jitter time is further calculated, the synchronization state between the tested devices is monitored, and the support of the network and the time level is provided for developing, debugging and measuring the vehicle-mounted information network.