The heterogeneous electrical interconnections of microminiature fuzes are a key issue that restricts the further reduction of volume to realize higher density integration.A laminated 3D electrical interconnection structure for fuzes based on additive manufacturing technology is proposed to improve the space utilization rate of electrical interconnections in the process of fuzes miniaturization，and the feasibility of the interconnection structure is verified through performance simulation analysis，prototype preparation，and multidimensional and multi-environmental tests.The results show that the laminated 3D electrical interconnection structure realizes the graphical，high-density，and highly integrated electrical interconnection through vertical stacking，which reduces or even eliminates the gap between circuits and electronic devices，and significantly improves the space utilization rate and connection efficiency；

after integrating with the fuze ignition control circuit，the overall height of the structure is reduced by about 80% compared with the traditional pin connection，while the resistance is only 0.018Ω.After -54-71℃ thermal shock test，wheeled vehicle transportation vibration test，55000

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high-impact overload test and other extreme environmental tests，the the microscopic images of vertical through-hole and horizontal trace show that the structure is undamaged.Tthe detonation performance test shows that the electrical performance of ignition control module is intact，its structural performance and electrical performance are reflected in the high reliability.