The truss type automatic production line of paper pulp molding tableware adopts the reciprocating forming technology of wet blank forming more uniform. Around the bottom of the molding slurry box is equipped with blowing pipe design, compressed air agitate the slurry to make the slurry concentration in the molding slurry box uniform. Before the molding mold is formed, the suction pipe blowing time can be adjusted to prevent the blocking of the molding mold and ensure that the slurry above the molding mold is more uniform.