This machine adopts the double straight needle, vertical automatic self-lubrication hook, the sliding rods elects the line, constitutes two lines double threads lock type needle mark. The needle pole uses the mechanical type separation and the union. The vertical axis uses the ball bearing strut, the synchronized tooth profile belt transmission. Plunger oil pump lubrication system. Uses the needle pole to sewing with the feeding tooth synchronization feeding way, the knob type disc adjustment needle is apart from with the releasse lever type feed mechanism, returns in the shuttle heart sewing thread wins over the spring, guaranteed the agent obtains the consistent tailoring effect with the facial suture, is suitable to sew all kinds of overcoat, the uniform, the jeans ,package, the decoration seaming and so on.