1, if it does not constitute a crime, it shall be detained for more than five days and less than ten days, and may also be fined up to five hundred yuan; If the circumstances are serious, he shall be detained for more than 10 and less than 15, and may also be fined less than 1000 yuan;

2. If the case constitutes a crime, he shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or public surveillance, and shall also or only be fined;

3. If the circumstances are serious, 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.

Legal consequences of using the official seal:

1. Illegal use or forgery of the official seal may lead to criminal responsibility; Engraving or using forged or altered official seals may constitute the crime of forging the seals of companies, enterprises, institutions and people's organizations according to the relevant provisions of the Criminal Law of People's Republic of China (PRC);

2. Those who participate in the illegal engraving of official seals may face administrative or criminal penalties, including fines, detention and even imprisonment;

3. Signing a contract or other legal documents with forged or illegally engraved official seals may lead to the invalidation of relevant documents, thus affecting the legitimate rights and interests of the parties to the contract;

4. Employees of an enterprise or unit who use the official seal without authorization may be investigated for internal responsibilities, including but not limited to disciplinary action at work and termination of labor contracts.

5. The injured party may pursue the civil liability of the individual or unit that caused the damage through legal channels and demand compensation for the losses caused by the illegal use of the official seal.

To sum up, it is illegal to carve the official seal, and the treatment methods include detention, fine and fixed-term imprisonment. And the legal consequences such as criminal responsibility, administrative punishment and invalid contract that may be caused by illegal use or forgery of official seals.

Legal basis:

Criminal law of the people's Republic of China

Article 280

Whoever forges, alters or buys or sells official documents, certificates and seals of state organs shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention, public surveillance or deprivation of political rights and shall also be fined; If the circumstances are serious, 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. Whoever forges the seals of companies, enterprises, institutions or people's organizations shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention, public surveillance or deprivation of political rights, and shall also be fined.