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

　　地球规模变化的气候带来了一种新的自然灾害和发达和复杂的城市体系持有人为扩大损失的潜在风险。还人以来一直破坏健康的巨大数量的化学物质已经被生产和用于追求方便和各种有毒物质无意中产生和积累的环境。因此,我们需要一些对策的观点,以防止城市环境灾难和环境风险管理形式。所以我们将开发和改进一个新的风险管理系统和防灾系统保护和创造城市环境,让人感觉容易和声音在他们的生活