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This paper was shown water property conversion and removal charactristic of escherichia coli for discharge tube with ZrO2 beads. At the result of the removal charactristic experiments of escherichia coli using the discharge tube with ZrO2 beads, because the electric field is also increased when input voltage is increased, the removal charactristic of escherichia coli was appeared relation connection to input voltage. And if a passing number of test water in discharge tube with ZrO2 beads is increased, the removal ratio of escherichia coli is to be increased because passing number of electric field section is increased. And if diameter of ZrO2 beads is increased, the removal time of escherichia coli is to be decreased because dielectric polalization of ZrO2 beads. Also, the removal ratio of escherichia coli of the discharge tube with ZrO2 beads. is appeared higher than the removal ratio of the discharge tube without ZrO2 beads. And a saturation point of ozone and H2O2 generation density inner water was appeared near 60 min.