The invention discloses a joint routing and power distribution method for a wireless multi-hop network, which integrates the energy efficiency, the transmission reliability and the safety. By considering a relatively realistic scene that both the position and the channel state information of an eavesdropper are unknown, for the wireless multi-hop network in a decoding and forwarding mode, the invention provides a safety routing and power distribution method under end-to-end bit error rate constraint. According to the method disclosed by the invention, a power distribution and routing strategy,which can satisfy the maximum safety connection probability, can be obtained by physical layer safety capacity definition based on an information theory at first; then, modelling is carried out by taking the strategy and the end-to-end bit error rate as the constraint and the total power consumed by a minimum path as a target; and a power distribution algorithm and a safety routing algorithm based on a classical Bellman-Ford algorithm are obtained by deduction. By means of the joint design method, the information transmission safety is ensured; furthermore, the transmission accuracy is realized; simultaneously, energy utility of the network is improved; and thus, the method has a certain practical significance.