1. Signature has legal effect, and forged signature shall bear legal responsibility. If it is used to forge receipts and contracts, it constitutes fraud, if it is used to create perjury, it constitutes perjury, and if it is used to forge government documents, the circumstances are even more serious.

2. Generally, it is a civil dispute and is not considered a crime. Whether it constitutes a crime depends mainly on the motivation of the perpetrator, the behavior carried out and the consequences caused.

1. If you enter into a contract with others in your name in good faith, if you have actually performed it, it means that you have acquiesced in the terms of the contract and he does not need to bear any responsibility; If you don't agree and don't want to perform this contract, you can claim that the contract is invalid and the contract is not binding on you, and the losses caused by it shall be borne by him.

Second, if it is for the purpose of illegal possession, fictional facts, imitation of your handwriting, fraudulent use of your name to sign a contract with others, suspected of contract fraud. Article 224 of the Criminal Law whoever, for the purpose of illegal possession, defrauds the other party of property in the process of signing and performing a contract in any of the following circumstances, if the amount is relatively large, shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention and shall also or only be fined; Huge amount or other serious circumstances