The earth scale change of climate has brought a new kind of natural disaster and the developed and complicated city system is holding a latent risk of expanding the damage artificially. Also people has been spoiling the health since the immense quantity of chemicals have been produced and already used in pursuit of convenience and various toxic substances have been produced unintentionally and accumulated in environment. Therefore, We need some countermeasures from the viewpoint to prevent the city environment form disaster and to manage environmental risks. So we will develop and improve a new risk management system and a disaster prevention system to preserve and create the city environment where people feel easy and sound in their life

　　地球規模變化的氣候帶來了一種新的自然災害和發達和復雜的城市體系持有人為擴大損失的潛在風險。還人以來一直破壞健康的巨大數量的化學物質已經被生產和用于追求方便和各種有毒物質無意中產生和積累的環境。因此,我們需要一些對策的觀點,以防止城市環境災難和環境風險管理形式。所以我們將開發和改進一個新的風險管理系統和防災系統保護和創造城市環境,讓人感覺容易和聲音在他們的生活