The parties may rescind a contract if they reach a consensus through consultation.The parties may agree upon the cause of rescission of the contract by either party. Upon the cause occurs, the party who has the right to rescission may rescind the contract. 当事人协商一致，可以解除合同。当事人可以约定一方解除合同的事由。解除合同的事由发生时，解除权人可以解除合同。 Where neither the law provides for nor the parties make an agreement upon the time limit to exercise the right to rescind a contract, the right shall be extinguished by non-exercise within one year from the day when the party who has the right to rescind knows or should have known the cause of rescission or within a reasonable period after the other party makes a demand. 法律没有规定或者当事人没有约定解除权行使期限，自解除权人知道或者应当知道解除事由之日起一年内不行使，或者经对方催告后在合理期限内不行使的，该权利消灭。