A particle collecting device (200) includes a duct (201), a blower (202), an ionizing device (203), at least two electrodes (204), a power supply (205), and a controller (206). The blower (202) causes air to flow in a predetermined blowing direction (D11) inside the duct (201). The ionizing device (203) is disposed inside the duct (201) and ionizes particles contained in the air inside the duct (201). The at least two electrodes (204) is disposed to extend along the blowing direction (D11) and faces each other on a downstream side of the ionizing device (203) in the blowing direction (D11) inside the duct (201). The power supply (205) charges at least one of the at least two electrodes (204) to cause a potential difference between the at least two electrodes (204). The controller (206) stops the blower (202) in response to an ionization operation by the ionizing device (203).
