People had no recognition to indoor environment before, especially that caused by family decoration. This situation has changed, people think much of its importance, which reflects that people’s recognition has enhanced. But it should be treated correctly and not cause overmuch intense, for there is no enough scientific evidence to testify there is direct relationship between decoration and cancer.

Currently, indoor decoration does bring many harmful substances, and the discomfort caused by these substances is called syndrome of ill building. The reason of calling it syndrome is that there are only some symptoms and it shouldn’t be confirmed as certain pathological changes. For example, formaldehyde contained in ornate materials stimulate viscous membrane of respiratory tract and eye conjunctiva, and cause some symptoms such as eyes dry and coarse, weep, and these symptoms will disappear when people leave the building. Although formaldehyde and Radon containing in cement and granite is the potential cancer caused factors, the taking place of cancer is also connected with some gene and circumstance factors, and a long period of time of about tens of years is needed.

Nowadays, buildings are always pressurized due to the prevalent use of air-condition. In these pressurized buildings, there exist Ammonia, Formaldehyde and volatility organic substance especially Ammonia pollution. People staying here often feel discomfort and stimulating odor, company symptom of headache, swirl, chest pressure, tired, gorge gall, skin hypersusceptibility. If people stay in this circumstance for a long time, it is harmful to their health and even causes some diseases, so corresponding measures must be taken. First, choose materials to reduce pollution; keep windows open to fasten the circulation of indoor air; use air cleaner, air changer, lampblack drawer and so on to filtrate and dilute air. Dispelling peculiar smell in virtue of incense and air clarifier only has an overcast function but can’t eliminate harmful substance radically. Further more, these substances are pollutants themselves.

Researchers suggested that correlative departments should promulgate sanitation standard of indoor air quality as soon as possible and strength periodical supervision.