Transmission method and transmission device for data packet

Disclosed are a transmission method and a transmission device for a data packet, comprising: in a process of distributing and sending the data packet, after a front-end node divides a data packet sent to a destination node into a plurality of data sub-packets, inter-packet combined encoding is performed on the data sub-packets according to a certain combined encoding mode, and data sub-packet group obtained after encoding is sent to the destination node. Even if a channel state of a transmission path suddenly deteriorates, since the destination node need not wait for receiving all the encoded data sub-packet groups as long as an original data packet can be parsed out by combining content in a received encoded data sub-packet group with a corresponding decoding mode, a network emergency has less influence on a process of the destination node receiving the data packet, and there is no significant influence on transmission efficiency.