The invention relates to a multi-hop relay transmission method based on a partially overlapped channel. The method comprises: firstly, an orthogonal channel is distributed to each data terminal, and then a network control center executing relay-channel joint updating algorithm based optimal response, to update a part of overlapped channels of the relay nodes and relay transmission links among theterminals, so that information interaction can be carried out among the terminals. According to the invention, the spectrum utilization rate can be effectively improved, and the overhead of relay nodechannel switching and the energy consumed by movement can be saved.