1. If you impersonate another person to sign a contract, it may constitute the crime of contract fraud; The crime of contract fraud refers to the act of defrauding the other party's property by fictional facts or concealing the truth in the process of signing and performing the contract for the purpose of illegal possession, with a large amount of money;
2. Other corresponding crimes may also constitute financial fraud and bill fraud; Financial fraud includes fund-raising fraud, loan fraud, financial bill fraud, letter of credit fraud, credit card fraud, securities fraud and insurance fraud;
3. In the course of litigation, impersonating others' signatures may constitute the crime of obstructing testimony and perjury. The crime of perjury refers to the behavior that witnesses, expert witnesses, recorders and translators deliberately make false proofs, expert appraisals, records and translations on the feelings that are important to the case, with the intention of framing others or concealing criminal evidence.
Criteria for filing the crime of contract fraud:
1. Signing a contract in the name of a fictitious unit or someone else;
2. using forged, altered or invalid bills or other false certificates of property rights as the guarantee;
3. Having no actual performance ability, tricking the other party into continuing to sign and perform the contract by performing the small contract first or partially;
4. fleeing after receiving the goods, payment, advance payment or secured property from the other party;
5. defrauding the other party's property by other means.
to sum up, the conviction of forging others' signatures should be based on the actual situation.
Legal basis:
Article 224 of the Criminal Law of the People's Republic of China
The crime of contract fraud is under any of the following circumstances. If the amount involved is relatively large, it shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention, and shall also or shall only be fined; If the amount is huge or there are other serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years and shall also be fined; If the amount is especially huge or there are other especially serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than 1 years or life imprisonment, and shall also be fined or confiscated:
(1) signing a contract with a fictitious unit or using another person's name;
(2) using forged, altered or invalid bills or other false certificates of property rights as the guarantee;
(3) having no actual performance ability, tricking the other party into continuing to sign and perform the contract by performing the small contract first or partially;
(4) escaping after receiving the goods, payment, advance payment or secured property from the other party;
(5) defrauding the other party's property by other means.