For someone, in addition to the name on the ID card, there may be previous or commonly used names, which may be inconsistent with the name on the ID card, but as long as they are signed by themselves, they have legal effect, and the signer should bear corresponding legal responsibilities. In addition, when signing, try to confirm whether the signature of the other party is consistent with the name on the current ID card, or ask the other party to explain the situation to avoid unnecessary disputes. At the beginning and end of the contract, the ID number is signed next to the name to prevent the defendant from arguing that the signer has the same name as himself. Because the name may have the same name but the ID number is unique, it is usually recommended to sign the ID number together. If the signature of the contract is inconsistent with the ID number, the signatory of the contract is usually regarded as the party to the contract. However, in some cases, the judge uses the person corresponding to the ID number as the guarantor of the contract. The general reason is that the ID number is unique. This person writes down his ID number in the column of guarantor, indicating that he is willing to guarantee.

legal ground

Article 490 of the Civil Code of People's Republic of China (PRC): If the parties conclude a contract in the form of a contract, the contract is concluded when the parties sign, seal or fingerprint it. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it. A contract shall be concluded in written form as stipulated by laws, administrative regulations or agreed by the parties. If the parties do not do this in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.