1. If the house purchase contract has not been put on record after online signing and wants to change its name, the buyer and the developer need to apply for canceling the online signing of the house purchase contract notice registration. After the approval of the Housing Authority, the Housing Authority will withdraw the invalid purchase contract and cancel the advance notice registration, and the developer can re-sign the purchase contract with the buyers. At this time, the name of the head of household can be changed. 2. Online signing has been completed and filing has been completed. In this case, the loan procedure is usually completed. If it is necessary to change the name, it is necessary for the buyer and the developer to negotiate, obtain the developer's consent to terminate the existing purchase contract, and sign a contract with the new buyer for re-filing.