Abstract: The 3D printing technology offers new possibilities for the design and production of cold-plate. Based on selective laser melting (SLM) technology, a cold-plate with lattice-frame is designed in this paper. To verify the mechanical properties and heat transfer performance of the cold-plate, firstly, the influence of 4 types of lattice-frames with different scales and different structure on heat transfer performance is studied by numerical simulation and the optimal lattice-frame structure is determined. Then the test prototype is designed by SLM technology. Finally, the heat transfer performance difference between cold-plate with latticeframe and traditional cold-plate under different heat consumption is compared by experiment. The mechanical properties of cold-plate with lattice-frame are studied by random vibration test and impact test, too. The results show that the lattice-frame material with 4 mm 12-edge shape has the best heat transfer performance. Compared with the traditional cold-plate, the cold-plate with lattice-frame is 13.8% lighter and it can pour 12.2% more paraffin. The cold-plate with lattice-frame has better heat transfer performance and warms up more slowly than traditional cold-plate while total thermal power is 160 W. Total time to heat the cold-plate with lattice-frame to 105.3 ℃ is 6.8% longer than that of the traditional cold-plate.