To provide a compact incinerator of high combustion efficiency, generating a smokeless and odorless exhaust gas, remarkably reducing generation of harmful substances such as dioxin, dust and CO, and reducing fuel consumption.

This incinerator is composed of a furnace body 1 comprising a dry distillation gas chamber 2 for dry-distilling and gasifying an incinerated object inside, a first combustor 4 for incinerating the incinerated object C in the dry distillation gas chamber 2 to dry distill and gasify the same, a heat chamber 7 for secondarily burning the dry distillation gas generated in the dry distillation gas chamber 2, a dry distillation gas inflow hole 6 for flowing the dry distillation gas into the heat chamber 7, a second combustor 8 for burning the dry distillation gas in the heat chamber 7, and a chimney 12 for discharging an exhaust gas in the heat chamber 7 to the external. A part including at least the dry distillation gas inflow hole 6, of the heat chamber 7 is disposed in an area of the dry distillation gas chamber 2.