Legal analysis: there will be certain risks, so when signing, you must write the content on paper, that is, you must write the purpose of signing; When writing the content, don't leave blank, write down the loan amount in words, make a copy of the original, and let the other party sign the copy.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 469 The parties may conclude a contract in writing, orally or in other forms.

Written form refers to contracts, letters, telegrams, telexes, faxes and other forms that can tangibly express the contents contained.

A data message that can tangibly express its content through electronic data interchange, e-mail, etc. , and can be retrieved at any time, are considered in writing.

Article 490 Where the parties conclude a contract in the form of a contract, the contract is formed when the parties sign, seal or fingerprint it. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it.

A contract shall be concluded in written form as stipulated by laws, administrative regulations or agreed by the parties. If the parties do not do this in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.