The LINE-12D high-viscosity filling machine is redeveloped based on the LIN-8D high-viscosity filling machine. The device adopts ballscrew filling and is controlled by servo motor, which leads to more flexible measurement and adjustment and more accurate measuring precision. The filling valve adopts special pneumatic three-way valve, so that the machine is more for fit for filling highly viscous materials. Anti-wire forming choke plug is equipped to effectively eliminate wire forming when  highly viscous materials are being filled.