Article 44 of the Contract Law stipulates: "A contract established according to law shall take effect upon its establishment." Roman law stipulates the principle of simultaneous establishment, which holds that the establishment and entry into force of legal acts occur simultaneously. For a long time, China's legislation and judicial practice have not made a strict distinction between the establishment and effectiveness of contracts and the non-establishment and invalidity of related contracts, thus equating the establishment and effectiveness of contracts.
The establishment of our national contract and the entry into force of the contract are two completely different concepts, but many ordinary people don't know the difference between them. Under normal circumstances, after the contract is established, it does not necessarily have legal effect. First of all, it depends on whether the subject of the contract and the agreed content comply with the law.