Provided are a service data processing method, device and system. The method comprises: sending, by a receiving device, a query request carrying marker information to a processing device, so that the processing device queries whether there is local data carrying the marker information, wherein the marker information is used for identifying data required by the receiving device for conducting a target service; receiving, by the receiving device, query result information sent by the processing device; and if the query result information indicates to the processing device that there is no data carrying the marker information, conducting, by the receiving device, the target service according to the received data carrying the marker information. By means of the present application, the data integrity can be determined, thereby ensuring the successful conduct of a service.
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