The utility model provides an air cleaning facility which comprises a shell, an air tunnel, a first ozone generator, a filter set and a second ozone generator. The shell is provided with air suction ports and release ports, the air suction ports are used for leading air into the air tunnel, and the release ports are used for releasing the air; the air tunnel is connected with the air suction ports and the release ports; the first ozone generator generates ozone which is led into the air tunnel; the filter set is arranged inside the air tunnel and is provided with an ozone decomposition filter and a first efficient particulate air filter, the ozone decomposition filter can decompose the ozone into oxygen, the first efficient particulate air filter is positioned on a downstream side of the ozone decomposition filter and can remove dust discharged from the ozone decomposition filter, the air which is led into the air tunnel from the suction ports and the ozone which is generated by the first ozone generator are mixed with each other to form a mixture, the mixture sequentially flows through the ozone decomposition filter and the first efficient particulate air filter and is released from the release ports, and the second ozone generator can release generated ozone to the outside of the shell and generates the ozone by the aid of air which flows through the filter set. The air cleaning facility has the advantage that parts such as pumps for feeding the air to the ozone generators in a pressure manner cannot be degraded easily.