The present invention relates to an ionized bacterial sterilizer that concentrates the intensity and distribution of a cylindrical segment electric field into a stacked filter module, allows a segment electric field to be formed in all directions of 360 degrees, and improves the efficiency of trapping/sterilizing harmful ionized microorganisms. The ionized bacterial sterilizer ionizes the incoming fine dust and harmful microorganisms with an anionization module (EI), and then adheres them to a special filter installed in a direction parallel to the air flow direction. Such an ionized bacterial sterilizer, after ionizing the harmful microorganisms introduced into the anionization module, the ionized bacterial sterilizer that adheres to the collecting part with a cylindrical line segment electric field, the housing having a receiving space formed therein； It is installed in the interior of the case and the support plate is formed with an opening hole in the center； A blower unit which is installed on a lower surface of the base plate portion and sucks air from an upper portion of the base plate portion and discharges it to a lower portion of the base plate portion and a lower portion of the case； One end of the plurality of support modules, including a plurality of support modules, is spaced apart from the upper surface of the support plate portion, the other ends of the plurality of support modules are connected to one another, and a positive electrode is formed by punching from the top surface of the plurality of support modules toward the bottom surface. A mounting portion including a plurality of positive electrode installation holes connected to the line and a plurality of negative electrode installation holes connected to the negative electrode line, and including a cylindrical assembly portion connected to the cylindrical portion； A first filter layer, a third filter layer and a three-layer laminated filter module including a second electrostatic film that gene
