Nowadays, the electrical interconnection interface of the miniature unmanned aerial vehicles and the micro munitions are becoming miniaturized. Firstly, the development and evolution process of the Aircraft/store Electrical Interconnection System(AEIS) standard cluster is studied. Then the functions and requirements of the micro munitions interface signal set defined by AS5726A, including three kinds of signals, i. e. , the digital data bus, the discrete magnitude and the power, are expounded and analyzed. Furthermore, new features of micro munitions interface are researched, with comparison to MIL-STD-1760 interface and the miniature mission store interfaces. Finally, preliminary solutions are presented to solve such engineering application problems as the isolation network of the micro munitions interface, the mated status interface circuit and the control flow.