Whether children need their parents' signatures to buy a house can be divided into the following two situations: 1. If the child is an adult and has full capacity for civil conduct, it does not need the signature of parents; 2. If it is a minor, parents should sign on behalf of the person with limited capacity for civil conduct. Parents choose a house for their children, bring the child's birth certificate or one-child certificate, household registration book, the seal of the child and guardian, and sign the contract after consultation with the developer. According to the provisions of the Civil Law of People's Republic of China (PRC), a guardian shall perform his guardianship duties, protect the person, property and other legitimate rights and interests of the ward, and shall not dispose of the property of the ward except for safeguarding the interests of the ward. Guardians perform their guardianship duties according to law and are protected by law. If the guardian fails to perform his guardianship duties or infringes upon the lawful rights and interests of the ward, he shall bear the responsibility; If property losses are caused to the ward, compensation shall be made for the losses. Upon the application of the relevant personnel or units, the people's court may revoke the qualification of guardian. Legal basis: Article 114 of the Civil Code of People's Republic of China (PRC) refers to the right holder's direct control and exclusive right to specific things according to law, including ownership, usufructuary right and security right. Article 128 Where the law has special provisions on the protection of the civil rights of minors, the elderly, the disabled, women and consumers, such provisions shall prevail.

legal ground

Article 114 of the Civil Code of People's Republic of China (PRC): Definition and Types of Real Right Civil subjects enjoy real right according to law. Property right is the right that the obligee enjoys direct control and exclusiveness over the specified object according to law, including ownership, usufructuary right and security right.

Article 128 of the Civil Code of People's Republic of China (PRC) Special Protection of Civil Rights Where the law has special provisions on the protection of civil rights of minors, the elderly, the disabled, women and consumers, those provisions shall prevail.