The invention particularly relates to a synchronous remote replication implementing method. According to the synchronous remote replication implementing method, after a far-end host receives a write request sent by a local host, write success information is returned firstly, then the write request is sent to a remote storage device, and the local host returns write success confirmation information to an up-application. By means of the synchronous remote replication implementing method, the defect that part of data are lost due to sudden power failure of the local host, natural disaster and other reasons in the asynchronous remote replication process can be made up for, meanwhile the time in waiting for write success confirmation of the far-end storage device is omitted for the far-end host, the time in waiting for remote replication is shortened, the influence, caused by synchronous remote replication, on the performance of the up-application is lowered, and data protection and disaster recovery are facilitated.