An electrical interface assembly having a long service life includes a plug and a socket, a plug shell includes a first lead connecting part and a socket connecting part, the socket connecting part includes a hollow cylindrical inner barrel and an outer barrel, an outer wall of the inner barrel is provided with a plurality of long-strip-shaped limiting plates, and length directions of the limiting plates is parallel to an axial direction of the inner barrel; the socket shell includes a second lead connecting part and a hollow cylindrical plug connecting part, a check ring is arranged between the plug connecting part and a socket insulator, the check ring is formed by a plurality of baffle plates in a surrounding manner, adjacent baffle plates have gaps, and the limiting plates can be clamped in the gaps. Structures of the plug and the socket are closely matched, so that when inserted in the socket, the plug can rapidly find a position accurately through a clamping position, plugging and unplugging are convenient, and after being inserted in the socket, the plug is good in stability and not easy to fall off. The electrical interface assembly provided by the invention requires relatively low insertion and extraction force and is provided with a protection structure, the plug and the socket are not easy to damage, and the electrical interface assembly has extremely high plugging and unplugging times, and thus has a long service life.