Casting paper runner pipe was an ideal substitute for ceramic runner pipe, which belongs to pulp molded products. The paper runner pipe contained dozens of different materials and had specific design requirements for the mold. Different surface treatment, filter screen and exhaust hole were studied. The results show that the finishing mold of paper runner pipe cannot add the filter mesh with different from the general pulp molding products, the vent hole needs to be hidden in the reinforcing rib, and the mold surface roughness should be within the range of 1.6~3.2, to match the application of permanent or semi-permanent release agent.