It depends: 1. If authorized by me, the proxy signature is valid for me, and I shall bear the consequences of the legal relationship confirmed by the signature. Two, without my authorization, the signature is invalid to me, and the legal responsibility of the signature shall be borne by the person who has no right to sign. Article 171 of the Civil Law: If an actor still acts as an agent without the power of agency, beyond the power of agency or after the termination of the power of agency, it will have no effect on the principal without ratification by the principal. The counterpart may urge the principal to ratify it within 30 days from the date of receiving the notice. If the trustor fails to declare it, it shall be deemed as refusal to ratify it. Before the act committed by the actor is ratified, the bona fide counterpart has the right to revoke it. Revocation shall be made by notice. If the act committed by the actor is not ratified, the bona fide counterpart has the right to demand the actor to perform the debt or demand the actor to compensate for the damage he has suffered. However, the scope of compensation shall not exceed the benefits that the counterpart can obtain when the principal ratifies. If the counterpart knows or should know that the actor has no right to act as an agent, the counterpart and the actor shall bear the responsibility according to their respective faults.