Propose an algorithm to jointly optimize routing and energy harvesting rate in wireless sensor networks（ WSNs） with energy harvesting devices. By designing size and network routing of node energy harvesting devices

aiming at maximizing data sampling rate under the budget constraint. The algorithm models the problem as a combination optimization probles and by convex relaxation and variable discretization algorithm

and get a group of suboptimal solution avoid high complexity exhaustive search. The simulation results illustrate that performance of the algorithm is better than comparative algorithms in different network scales.