The invention discloses a multipath fast and reliable network communication method. The method comprises the following steps: deploying multiple message nodes and relay nodes in an Internet message system, performing dynamic evaluation on the channel quality of the message channels, and selecting multiple transmission channels with higher quality to perform multipath data transmission. In the dynamic evaluation process of the channel quality, the message nodes periodically send network detection data packets to a destination message node in a direct connection mode or a relay forwarding mode;the message nodes package response as internal data packets after receiving the detection data packets, and send the internal data packets to the message initiation node. In a multipath data transmission process, the message system packages a communication message as the internal data packet and sends the same to the destination message node in multiple different ways. Compared with the traditional high-speed reliable cross-operator and cross-international Internet communication transmission technology, the multipath fast and reliable network communication method is applied to the network communication between internet hosts to greatly improve the network communication stability between the hosts and improve the efficiency of using the network bandwidth, and has a great cost advantage on the cross-operator and cross-international Internet application occasions.