The invention provides a unscrewing and pulling device, which is used to remove the components connected by the head and the main body in a threaded manner, including: a clamping worktable; a unscrewing mechanism, including a unscrewing seat located on one side of the clamping workbench, And a plurality of jaws arranged in the unscrewing seat; a compression spring is arranged between the jaws and the unscrewing seat; one end of the main shaft is connected with the unscrewing seat, and a rotating power mechanism is connected; the pulling mechanism includes another connection with the main shaft A plurality of pulling claws connected at one end, and a linear power mechanism connected with the pulling claws. In the unscrewing and drawing device provided by the present invention, the clamping table is used to clamp the main body, the jaws are used to clamp the head, and the main shaft can drive the unscrewing seat and the jaws to rotate under the drive of the rotating power mechanism, so that the head The head is unscrewed from the main body; the pull claw can pull the main shaft to move axially under the drive of the linear power mechanism, and drive the unscrewing seat and the jaw to move, and finally the head is separated from the main body; during the removal process, the jaw always clamps the head , the radial movement of the head is limited, and the removal process is reliable and stable.