The invention relates to a metal conduit and particularly relates to a compressible metal conduit. The metal conduit comprises a conduit body (2), a conduit nozzle seat (5), a spring (6) and a conduit nozzle (10). The conduit nozzle seat (5) is cylindrical, bosses are arranged on the inner circumferential surfaces of two ends, and the conduit nozzle seat (5) is arranged and fixed outside of one end of the conduit pipe (2) in a sleeving manner; the spring (6) is mounted between the conduit nozzle seat (5) and the conduit body (2); the conduit nozzle (10) is arranged in the conduit nozzle seat (5) in a sleeving manner; a boss is arranged on the outer circumferential surface, in the conduit nozzle seat (5), of the conduit nozzle (10); and the boss of the conduit nozzle (10) is in contact with the external end of the spring (6). By the adoption of a combined design, the spherical conduit nozzle (10) slides on the outer surface of a shaft tube (3), the amount of compression of the conduit is relatively great, and the metal conduit is convenient to mount.