Legal analysis: the drawer's signature on the bill does not conform to the legal provisions. Its signature is invalid, but it does not affect the validity of other signatures that meet the requirements. The signature on the bill is signature, seal or signature and seal. The signature of the legal person or other organization that uses the bill shall be the signature of the legal person or other organization plus the signature of its legal representative or its authorized agent.

Legal basis: Article 14 of the Bill Law of People's Republic of China (PRC) shall be true and shall not be forged or altered. Whoever forges or alters the signature and other recorded items on a bill shall bear legal responsibility.

Forged or altered signatures on a bill of exchange shall not affect the validity of other authentic signatures on a bill of exchange.

If other items recorded on the bill are changed, the signer before the change shall be responsible for the original items recorded; The changed signatory shall be responsible for the changed recorded items; If it is impossible to distinguish whether a bill of exchange is signed before or after alteration, it shall be deemed to be signed before alteration.