Legal analysis: Yes. The house sales contract signed by one of the husband and wife is completely valid. Because the civil law stipulates that both husband and wife have property and equal right to dispose of it. Therefore, when buying a second-hand house, the husband and wife sign it, and the other party knows that they will not raise any objection, which is acquiescence.

Legal basis: Article 1062 of the Civil Code of People's Republic of China (PRC), the following property acquired by husband and wife during the marriage relationship is the common property of husband and wife, which belongs to husband and wife: (1) salary, bonus and labor remuneration; (2) Income from production, operation and investment; (3) Income from intellectual property rights; (4) Inherited or donated property, except as provided for in Item 3 of Article 1063 of this Law; (five) other property that should be owned by * * *. Husband and wife have equal rights to dispose of the same property.