The invention discloses an automatic metal pipeline feeding device. The automatic metal pipeline feeding device comprises a bracket set and a driving mechanism, wherein the bracket set comprises N brackets linearly arranged; N is greater than or equal to 2 and is a natural number; any two adjacent brackets are provided with progressive mechanisms; each progressive mechanism comprises a base horizontally arranged, a swinging seat arranged on the base and swinging along the arrangement direction of the brackets, and a mechanical clamping hand arranged on the swinging seat and capable of swinging along with the swinging of the swinging seat; and the driving mechanism is used for driving the swinging seats of the progressive mechanisms to swing simultaneously in the same direction. The automatic metal pipeline feeding device has the beneficial effects that pipe fittings are held through mutual matching of the brackets linearly arranged; the pipe fittings are transferred along the arrangement direction of the brackets by mutual matching of the progressive mechanism arranged between the two adjacent brackets and the driving mechanism, thereby realizing the automatic feeding of the pipe fittings; and manual pushing and feeding are not needed, thereby saving time and labor.