The invention discloses a paper pulp defoaming device for printing production. The paper pulp defoaming device comprises a paper pulp tank; a bar-shaped chamber is formed on one side of the paper pulptank; a moving mechanism is arranged in the bar-shaped chamber; a bar-shaped opening is formed on one side of the paper pulp tank opposite to the bar-shaped chamber; a guiding mechanism is arranged in the bar-shaped opening; a defoaming roller is connected between the moving mechanism and the guiding mechanism; a plurality of spines are uniformly distributed on an outer side wall of the defoamingroller; a loading plate which is connected with the guiding mechanism is arranged on one side of the paper pulp tank; a loading chamber is formed in the loading plate; a reciprocating mechanism is arranged in the loading chamber; a circular chamber is formed on one side of the loading chamber in the loading plate; a driving mechanism which is connected with the reciprocating mechanism is arrangedin the circular chamber; a hollow chamber is formed in the loading plate; a piston is arranged in the hollow chamber; the hollow chamber is divided into a first chamber body and a second chamber bodyby the piston. The paper pulp defoaming device for printing production has a reasonable structure, is capable of quickly defoaming larger paper pulp tanks and has an obvious defoaming effect.