Legal analysis: There are three kinds. 1, the people's government organized a unified demolition. That is, the people's government or its specially entrusted units will uniformly implement demolition, compensation and resettlement. It is a demolition method advocated and encouraged by the state. The Regulations on Demolition stipulates: "Unified demolition should be carried out in cities and areas where comprehensive development is carried out in cities with conditions." 2. Self-demolition. Refers to the demolition and resettlement and the compensation for the demolished person himself. The main demolition business personnel must be trained by the competent department of demolition, and obtain the qualification certificate of demolition before taking up their posts. 3. Entrusted demolition. It refers to the demolition of housing demolition compensation and resettlement work entrusted to others. The client shall be the unit that has obtained the qualification certificate for house demolition.

Legal basis: Regulations on Expropriation and Compensation of Houses on State-owned Land Article 8 In order to safeguard national security, promote national economic and social development and other public interests, if it is really necessary to expropriate houses under any of the following circumstances, the municipal or county people's government shall make a decision on house expropriation:

(a) the needs of national defense and diplomacy;

(two) the needs of the government organization and implementation of energy, transportation, water conservancy and other infrastructure construction;

(three) the needs of public utilities such as science and technology, education, culture, health, sports, environmental and resource protection, disaster prevention and mitigation, cultural relics protection, social welfare, and municipal utilities organized and implemented by the government;

(four) the needs of the construction of affordable housing projects organized and implemented by the government;

(five) the needs of the old city reconstruction organized and implemented by the government according to the relevant provisions of the Urban and Rural Planning Law;

(six) the needs of other public interests as prescribed by laws and administrative regulations.