The invention discloses a cross-cluster data merging method and device, electronic equipment and a computer storage medium. The method is used for merging data of at least one first cluster into a second cluster. The method comprises the steps of reading relay logs of the first cluster, wherein the relay logs record relevant information of a write data operation of the first cluster; analyzing thecontent of the relay logs, and converting the content into an executable data operation instruction of the second cluster; executing the data operation instruction on the second cluster so as to merging the data of the at least one first cluster into the second cluster. Meanwhile, original stored data of the second cluster is not affected.