Legal analysis: the contract signed online is valid. The condition for the contract to take effect is that both parties voluntarily reach an agreement on the contents of the contract. Even a legal oral contract is valid as long as it can be proved that both parties entered into it voluntarily. As long as the network contract meets the relevant constitutive requirements of the contract, it has legal effect. In the network contract, both parties' recognition of the contract intention is confirmed in the form of electronic data.

Legal basis: Article 13 of the Electronic Signature Law: An electronic signature shall be regarded as reliable if it meets the following conditions at the same time: (1) When the electronic signature production data is used for electronic signature, it belongs exclusively to the electronic signatory; (2) When signing, the electronic signature production data is only controlled by the electronic signer; (3) Any changes to the electronic signature after signature can be found; (4) Any changes to the content and form of the data message after signature can be found. The parties can also choose to use electronic signatures that meet their agreed reliable conditions.

Article 469 of the Civil Code: The parties may conclude a contract in written form, 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.