Lithium dendrite growth and remarkable volume variation restrict the commercial application of lithium metal batteries. A three-dimensional porous carbon paper substrates was prepared via phenolic resin impregnation-hot pressing-carbonization process, and a highly conductive and lithiophilic coatings was constructed through palladium-free activation-electroless nickel plating-silver electroplating process. CP@Ni-P-B@Ag@Li composite anode materials were then obtained by molten lithium infiltration method. The CP@Ni-P-B@Ag-15 sample prepared with 15 min silver electroplating shows a continuous and dense silver layer, with the surface resistivity as low as 2.07 mΩ·cm and the porosity remaining at 65.31%. When assembled into a full cell with lithium iron phosphate cathode, it exhibits an initial coulombic efficiency of 95.51%, maintains a specific capacity above 120 mAh·g-1 after 500 cycles at 1 C rate with a capacity retention rate over 95%, and delivers a specific capacity of 87 mAh·g-1 at a high rate of 10 C. Electrochemical impedance spectroscopy tests confirm that the sample has the lowest charge transfer resistance. A silver layer with moderate thickness can effectively regulate lithium deposition and inhibit dendrite growth, and its synergistic effect with the three-dimensional porous structure of carbon paper relieves volume expansion, thus significantly improving the cycling stability and safety of lithium metal batteries.