The lease contract is essentially a lease contract, which is not among the documents that are not applicable to electronic contracts according to the law. Therefore, if the parties agree to use it, it is legally effective to sign a lease contract through an electronic contract. According to the law, the preservation of electronic contracts should meet the following conditions: ① the contents can be effectively expressed and can be retrieved for future reference at any time; (2) The format of data message is the same as that when it was generated, sent or received, or the format is different, but it can accurately represent the content originally generated, sent or received; (3) Being able to identify the sender and receiver of the data message and the time of sending and receiving. The electronic contract of our platform has achieved the following three points at the same time, ensuring its legal effect: ① CA certificate issued by CA institution /eID authentication system of the Ministry of Public Security: adopting the authentication technology of national institutions to ensure the true identity of electronic contract signers; (2) Anti-tampering technology: the original electronic file data is solidified by using the internationally accepted hash value technology, which is easy to identify whether the file has been tampered with; Third-party timing technology: accurately record the signing time. In addition, unlike traditional paper contracts, which are generally provided by renting houses or intermediaries, the electronic signature on an electronic contract must be authenticated by a third party other than the signatory of the contract to ensure its legal effect. Therefore, choosing a safe, compliant and convenient third-party electronic contract platform is the best way to sign an electronic lease contract, so you don't have to worry about the effectiveness of signing an electronic lease contract.