The invention discloses a ship metal hose welding support device convenient to weld and position. The ship metal hose welding support device includes a bottom plate, balls, a connecting plate and a hose body, a fixing plate is fixedly installed on the top surface of the right end of the bottom plate, the inside of the fixing plate is provided with a first storage slot, a pull rod is installed inside the fixing plate, the pull rod passes through the top surface of the fixing plate, the fixing plate is connected to a rotating shaft through the balls, the rotating shaft penetrates through the left surface of the fixing plate to be fixedly connected to a circular plate, a first lead screw is mounted on the circular plate, the first lead screw penetrates the circular plate, and a slider is installed on the outer surface of the first lead screw. By means of the ship metal hose welding support device convenient to weld and position, the circular plate rotates through rotation of the rotatingshaft on the fixing plate, meanwhile, the rotating shaft can be positioned through clamped connection of a limiting shaft and a limiting hole, the phenomenon that the rotating shaft rotates by itselfis avoided, and the stability of subsequent welding work by workers is facilitated.