Multi-hop wireless charging technology based on resonant repeaters is beneficial to improve energy replenishment efficiency of wireless rechargeable sensor networks（ WRSN）. The problem of how to use the minimum resonant repeaters to realize full multi-hop charging coverage of WRSN is presented

and presents a repeaters deployment method

TRLDS

which can realize full multi-hop charging coverage of sensor node is given.The whole network is divided by grid network determined by effective distance based on multi-hop charging

and one repeaters is deployed at the center of each grid to ensure the full multi-hop charging coverage. A set of rules are designed to remove redundant repeaters

while optimize the position of necessary repeaters to improve charging efficiency. Simulation results show that the proposed method achieves a full multi-hop charging coverage for sensor nodes with less number of repeaters

and can achieve an efficient energy supplement to WRSN with a lower cost.