For the wireless cooperative location network using Ultra-Wideband(UWB) signal, a function model of the square position error bound of the network and the transmitting power of the agents is explored. Under the condition that the total power of the agent is limited, based on the Stackelberg model and the particle swarm optimization algorithm, the transmit power of the agent is optimally allocated. The simulation shows that the power optimization allocation proposed in this paper is more efficient than the power equal allocation. The square position error bound is reduced by 3%, which improves the positioning accuracy.