An insecticide fumigator including a chemical cartridge mount on which a chemical cartridge is configured to be mounted, a heater disposed near the chemical cartridge mount and configured to heat the chemical cartridge such that an insecticide in the chemical cartridge is evaporated from a fumigation part of the chemical cartridge, a light source disposed near the fumigation part and configured to emit light having a first wavelength range to attract insects, and a housing provided with the chemical cartridge mount and receiving the heater and the light source, in which the light source includes a UV LED and a substrate on which the UV LED is mounted, and the housing has a light passage hole through which light emitted from the light source passes.