Legal analysis: If one party signs on behalf of the other party, the effectiveness of the contract depends on the specific circumstances, mainly depending on whether the contract meets the effective conditions.

Legal basis: Article 464 of the Civil Code of People's Republic of China (PRC). A contract is an agreement between civil subjects to establish, change and terminate a civil legal relationship. Agreements on status relations such as marriage, adoption and guardianship shall be governed by legal provisions on such status relations; If there are no provisions, the provisions of this part can be applied according to their nature.