The invention provides a special multi-core combined plug-in cable for military industry, which comprises cable cores, a tensile rope, a central stabilizing sleeve, combined plug-ins and an external stabilizing sleeve. Each cable core consists of a conductor and an insulating pipe which sleeves the conductor, and the insulating pipe is a circular tubular structure. The cross section of the tensilerope is circular, and the cross-section diameter is the same with the outer diameter of each insulating pipe. The central stabilizing sleeve is a circular tubular structure, and the central through hole matches the cable cores. Each combined plug-in is a strip structure with a fan-shaped cross section, and is provided with a perforation matching the cable cores along the axis direction in the middle. The external stabilizing sleeve is a circular tubular structure, and sleeves the combined plug-ins. A water-proof sleeve, a fire-proof sleeve and an external protective pipe are arranged in turnoutside the external stabilizing sleeve. The beneficial effects are as follows: a combined plug-in design is adopted, and the internal structures of the cable can be arranged and distributed accordingto the actual need for the cable cores; the cable has a wide application range; and the cable can be recycled and reused, and and the cost is reduced.