Demolition refers to the legal act that the unit that has obtained the demolition permit demolishes the houses and their appendages within the scope of construction land according to the requirements of urban construction planning and the land use documents approved by the government, resettles the units and residents within the scope, and compensates their losses. The development of a city is a process of continuous reconstruction. With the smooth implementation of China's economic system reform and the gradual establishment of a socialist market economy, productivity has developed unprecedentedly. For the overall planning of the city, and sometimes for the needs of national special projects, it is necessary to demolish the original buildings in order to achieve overall unity or rational use of increasingly tense state-owned land resources.