A particulate matter reduction apparatus for a diesel engine, the particulate matter reduction apparatus comprising: a housing configured to be placed on a flow path through which exhaust gas from the diesel engine is discharged; a filter configured to comprise a plurality of unit filter portions, each extending in a length direction of the housing and being accommodated in the housing; a plurality of unit electrodes (531, 631, 532) configured to transmit electronic signals individually to the respective unit filter portions; and a control unit configured to control electronic signals provided to the unit electrodes (531, 631, 532) and allow the unit filter portions to be heated independently; the particulate matter reduction apparatus characterized in that: the filter is formed in a cylindrical shape or oval shape, the unit filter portions are formed by dividing the filter by a predetermined angle and the unit filter portions which are adjacent to each other have a non-conductive adhesive layer interposed therebetween, wherein the unit electrodes (531, 532, 631) comprise at least a first electrode (531 or 631) formed on front ends of the unit filter portions into which exhaust gas flows and configured to be electrically connected with a negative electrode of a power supply to function as a ground electrode, and second electrodes formed on rear ends of the unit filter portions through which exhaust gas is discharged and configured to be electrically connected with a positive electrode of the power supply to function as a power electrode, wherein the particulate matter reduction apparatus further comprises a temperature sensor configured to measure a temperature of the filter, wherein the control unit controls the power to be supplied to the respective unit electrodes (531, 532, 631) according to measured temperature of the filter such that the measured temperature of the filter does not exceed a previously set temperature, and wherein the control unit is further configured to assign electronic signals sequentially to the respective unit filter portions which are adjacent to each other. a housing configured to be placed on a flow path through which exhaust gas from the diesel engine is discharged; a filter configured to comprise a plurality of unit filter portions, each extending in a length direction of the housing and being accommodated in the housing; a plurality of unit electrodes (531, 631, 532) configured to transmit electronic signals individually to the respective unit filter portions; and a control unit configured to control electronic signals provided to the unit electrodes (531, 631, 532) and allow the unit filter portions to be heated independently; the filter is formed in a cylindrical shape or oval shape, the unit filter portions are formed by dividing the filter by a predetermined angle and the unit filter portions which are adjacent to each other have a non-conductive adhesive layer interposed therebetween, wherein the unit electrodes (531, 532, 631) comprise at least a first electrode (531 or 631) formed on front ends of the unit filter portions into which exhaust gas flows and configured to be electrically connected with a negative electrode of a power supply to function as a ground electrode, and second electrodes formed on rear ends of the unit filter portions through which exhaust gas is discharged and configured to be electrically connected with a positive electrode of the power supply to function as a power electrode, wherein the particulate matter reduction apparatus further comprises a temperature sensor configured to measure a temperature of the filter, wherein the control unit controls the power to be supplied to the respective unit electrodes (531, 532, 631) according to measured temperature of the filter such that the measured temperature of the filter does not exceed a previously set temperature, and wherein the control unit is further configured to assign electronic signals sequentially to the respective unit filter portions which are adjacent to each other.