The contract signed by the son on behalf of his mother will take effect, provided that the mother authorizes it.

The act of children signing a contract on their behalf with the authorization of their parents is valid. Without authorization, the contract signed on their behalf will not be effective for the principal.

You need to bring the following materials when signing a contract:

1. Materials that can prove the subject qualifications of the parties, such as identity certificate, business license, legal representative identity certificate, etc.;

2. Other materials required for the contract, such as contract text, company seal, legal person seal, contract seal, signature pen, etc.

The process of signing a contract is generally as follows:

1. Signing a letter of intent: When both parties initially reach a cooperation intention, they can sign a letter of intent to determine the basic framework and terms of cooperation, which will serve as the basis for subsequent contracts. Basics;

2. Credit review: Both parties need to review each other's credit, qualifications, etc. to ensure the safety and stability of the contract signing;

3. Negotiate contract terms: Negotiate The terms of the contract include the content of the contract, method of performance, fees, guarantees and liability for breach of contract, etc., which require full communication and negotiation to ensure that both parties reach a consensus;

4. Sign a formal contract: reach an agreement after negotiating the contract terms Finally, the contract is formally signed. The contract requires the signature and seal of authorized representatives of both parties to ensure the validity of the contract;

5. Performance of the contract: Both parties shall perform the contract in accordance with the terms of the contract and complete their obligations and responsibilities;

6. Contract change: If the contract needs to be modified or changed, both parties need to renegotiate and sign a written change agreement;

7. Contract termination: If the contract expires or a breach of contract occurs, both parties need to Handle in accordance with the terms of the contract to ensure the legality and effectiveness of contract termination.

To sum up, there should be a power of attorney when signing a contract on behalf of a child. Otherwise, the contract signed on behalf of the child will not be legally binding on the child.

Legal basis:

Article 161 of the "People's Republic of China and Civil Code"

Civil subjects may enforce civil laws through agents Behavior.

According to legal provisions, agreement between the parties or the nature of the civil legal act, civil legal acts that should be carried out by the person himself shall not be represented by an agent.

Article 162

Civil legal acts performed by an agent in the name of the principal within the scope of agency authority shall be effective against the principal.