The invention discloses a converged communication method based on a 5G route switching terminal cellular, an Ethernet and WiFi (Wireless Fidelity), which comprises the following steps of: fusing two communication channels of a 5G network and the Ethernet, and fusing the channels by monitoring the communication quality of the two channels in real time; and during downlink, carrying out data subpackage on the two channels, fusing the data in the system, and then downlink to a terminal accessed through the Wi-Fi6. On the basis of a new generation of 5G technology, the Ethernet and the Wi-Fi wireless communication technology, during downlink, two channels are used for carrying out data subpackage, and the data are fused in the system and then downlink to a terminal accessed through Wi-Fi, so that the real-time high-speed transmission rate of the 5G technology, the Ethernet and Wi-Fi wireless communication is maximized, and the real-time high-speed transmission rate is maximized. And the user perception-free rapid uplink and downlink channel dual backup is realized, and when one network has a problem, the other network can continuously transmit data in real time, so that the user perception-free automatic backup is realized, and the data transmission security is ensured.