合同的成立,是指当事人经由要约、承诺,就合同的主要条款达成合意,即双方当事人意思表示一致而建立了合同关系,表明了合同订立过程的完结;合同的生效,是指已经成立的合同在当事人之间产生一定的法律约束力。一般来讲,合同生效的起始时间不能脱离合同成立的时间而独立确定,而且在绝大多数 The establishment of the contract refers to the parties through the offer, the promise of the main terms of the contract to reach a consensus that the parties agree on the meaning of the agreement and the establishment of a contractual relationship, indicating the conclusion of the contract signing process; the contract is effective, refers to the contract has been established There is some legal binding between the parties. In general, the starting time of the entry into force of the contract can not be independently determined from the time of the establishment of the contract, and in the vast majority