城市更新(Urban renewal,在英国称urban regeneration在美国称revitalization),是指在旧城迁置人与生意到新的地方,将残旧建筑拆除时保留部分历史遗迹,由国家征用一些土地和建筑,加以改造重建。这主要是因为城市快速现代化,旧城老化而衰残,生活在城市中的人,对于自己所居住的建筑物、周围的环境及其他生活活动有各种不同的期望和不满;对于街道、公 Urban renewal (urban regeneration in the United Kingdom is called urban regeneration in the United States called revitalization), refers to the relocation of people and businesses in the old city to a new place, the demolition of old buildings to retain part of the historical relics, by the state expropriation of some land and buildings , To be rebuilt. This is mainly due to the rapid modernization of cities, the decay of old cities due to aging and the fact that people living in cities have different expectations and dissatisfactions with the buildings they live in, the surrounding environment and other life activities. For the streets,