According to the contract law, the two parties signed a contract and the contract was established; If there is no effective condition or time limit attached to the contract, it will take effect after signing. The so-called signature, for a natural person, should be to sign his real name, but in this case, the name is different from the ID card, so the following discussions must be held: 1, whether to sign the contract on behalf of him; 2. Is it intentional to sign the contract because it is not my real will? If the above analysis is established, this contract is invalid for the contractor. But in the context you explained: 1, the same word is pronounced differently, and the contract has nothing to do with a person with different pronunciation. The ID number can prove that there is a clerical error in the signature; 2. The ID number is consistent with the actual signatory. The burden of proof belongs to the other party. If the other party has no evidence to prove the above two situations, the contract has been established and has legal effect.