Legal analysis: it is fraudulent to conclude a contract without using your real name. According to the relevant laws and regulations, if one party uses fraudulent means to make the other party conclude a contract against its true meaning, the injured party has the right to request the people's court or arbitration institution to change or cancel it. If the signed pseudonym does not match the household registration, but belongs to other names used to express the meaning of the actor in daily activities, if the signing behavior is the expression of the actor's true meaning and does not make the other party violate the true meaning, the signed contract shall be a valid contract agreed by both parties. If the actor signs his name on the premise that it may harm the interests of others, so that the other party violates his true meaning without knowing it, the effectiveness of the actor's signature behavior is to be determined, and the contract can be revoked or changed.

Legal basis: Article 500th of the Civil Code of People's Republic of China (PRC). In the process of concluding a contract, the parties shall be liable for compensation under any of the following circumstances:

(1) Concluding a contract under the guise of malicious negotiation;

(2) Deliberately concealing important facts related to the conclusion of a contract or providing false information;

(three) there are other acts that violate the principle of good faith.