The invention provides a channel resource coordination allocation method and device. The method includes that in a relay network, channel allocation information interaction between the father node andthe child node is carried out so as to enbble that the working time interval of the child node on the child channel comprises the working time interval allocated by the father node on the child channel; the sub-channel can be a working channel for mutual communication between the father node and the sub-node, so that when the father node and the sub-node perform sub-channel selection transmission, the problem that normal communication cannot be performed due to mismatching of communication between the father node and the sub-node is avoided, and coordination and utilization of a plurality ofchannels are realized.