Data synchronization method and related equipment

The embodiment of the invention discloses a data synchronization method and related equipment, which are used for improving cost synchronization efficiency. The method provided by the embodiment of the invention comprises the following steps: acquiring cloud newly-added costs and cloud document details corresponding to each cloud newly-added cost, wherein the cloud newly-added costs are costs that a cloud server exists but a terminal does not exist; establishing a corresponding relationship between each cloud newly-added cost and a corresponding local document detail, wherein the local document detail corresponding to each cloud newly-added cost is consistent with the cloud document detail corresponding to each cloud newly-added cost; the same kind of local cost corresponding to each cloud newly-added cost is determined from the multiple local costs, the local cost comprises the cost having the corresponding relation with any local receipt detail, and the service date corresponding to the same kind of local c