China had established a series of standards or regulations about indoor ammonia pollution while there were no related reports in other developed countries except Finland.

This paper states ammonia's physical and chemical characteristics, its source, the damage to hu- man body and effect factors of ammonia pollution. It also states its prevention method.

The domestic researches focused on indoor ammonia pollution prevention while foreign researches mainly focused on the control of indoor ammonia pollution at the field of husbandry and aquaculture.