China's provincial governors and ministers will be limited to no bigger than 54 square meters of office space, the nation's anti-graft body ordered on Saturday.

The public has been long outraged over Chinese officials' big and luxurious offices, which are now in the crosshairs of an on-going anti-corruption campaign.

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The offices of governor deputies will be no larger than 12 square meters while ministry department heads and local officials will have to do with 30 square meters of office space, according to the Central Commission for Discipline Inspection of the Communist Party of China. The ministry heads' second-in-command should fit in 24 square meter offices, the agency said.

Private toilets and lounges are allowed as long as offices are no bigger than the prescribed standards, but their assistants are not allowed to have toilets, anti-graft officials said.

The commission used as the basis for its order a document submitted by China's Ministry of Housing and Urban Rural Development and the National Development and Reform Commission.

The offices of county government heads shall be restricted to 30 square meters and 18 square meters for their aides.

In June last year, the Communist Party stepped up its austerity campaign. The party ordered provincial and municipal officials to move out of more than 2.5 million square meters of "misused" offices, which is nearly nine tenths of the total area deemed inappropriate.

Prominent provincial Communist Party cadres also moved out of about 27,000 square meters of space that did not meet regulations.

The party leadership carried out the campaign to put a lid on excesses and crack down on corruption. Authorities issued a string of rules and prohibitions against luxurious offices and extravagant state vehicles.

Local officials were also ordered to do away with frequent meetings, cut down official trips abroad and stopped the building of new government offices, according to a Communist Party statement.