An electric dust collector, comprising: a dust collection unit configured to trap charged particles; and a microwave generation unit configured to generate a microwave to be introduced into the dust collection unit and combust the charged particles trapped in the dust collection unit by the microwave, wherein: the dust collection unit has a gas flow path through which an exhaust gas containing charged particles flows, the dust collection unit includes a first electrode and a second electrode; the dust collection unit is configured to trap the charged particles by an electric field that is generated by a potential difference between the first electrode and the second electrode, the second electrode is arranged around the first electrode and surrounds the gas flow path, characterized in that the second electrode is provided with openings through which the charged particles pass, the dust collection unit includes a charged particle accumulation unit configured to accumulate the charged particles, the charged particle accumulation unit has an outer wall arranged around the second electrode, the outer wall is applied with a potential for electrically sucking the charged particles, the outer wall has openings for introducing the microwave generated by the microwave generation unit, the charged particles are moved into a space between the second electrode and the outer wall in the charged particle accumulation unit by the electric field that is generated by the potential difference between the first electrode and the second electrode, and an electric field of the microwave is applied to the space. a dust collection unit configured to trap charged particles; and a microwave generation unit configured to generate a microwave to be introduced into the dust collection unit and combust the charged particles trapped in the dust collection unit by the microwave, wherein: the dust collection unit has a gas flow path through which an exhaust gas containing charged particles flows, the dust collection unit includes a first electrode and a second electrode; the dust collection unit is configured to trap the charged particles by an electric field that is generated by a potential difference between the first electrode and the second electrode, the second electrode is arranged around the first electrode and surrounds the gas flow path, characterized in that the second electrode is provided with openings through which the charged particles pass, the dust collection unit includes a charged particle accumulation unit configured to accumulate the charged particles, the charged particle accumulation unit has an outer wall arranged around the second electrode, the outer wall is applied with a potential for electrically sucking the charged particles, the outer wall has openings for introducing the microwave generated by the microwave generation unit, the charged particles are moved into a space between the second electrode and the outer wall in the charged particle accumulation unit by the electric field that is generated by the potential difference between the first electrode and the second electrode, and an electric field of the microwave is applied to the space. the dust collection unit has a gas flow path through which an exhaust gas containing charged particles flows, the dust collection unit includes a first electrode and a second electrode; the dust collection unit is configured to trap the charged particles by an electric field that is generated by a potential difference between the first electrode and the second electrode, the second electrode is arranged around the first electrode and surrounds the gas flow path, characterized in that the second electrode is provided with openings through which the charged particles pass, the dust collection unit includes a charged particle accumulation unit configured to accumulate the charged particles, the charged particle accumulation unit has an outer wall arranged around the second electrode, the outer wall is applied with a potential for electrically sucking the charged particles, the outer wall has openings for introducing the microwave generated by the microwave generation unit, the charged particles are moved into a space between the second electrode and the outer wall in the charged particle accumulation unit by the electric field that is generated by the potential difference between the first electrode and the second electrode, and an electric field of the microwave is applied to the space.