The invention discloses a 
data processing method, apparatus and 
system, which comprises: when control strategy of control 
management plane is updated, updating the edition information of the control strategy; when data plane receives data message while the no item including the current 
data stream identification exists in the 
stream table of data plane, establishing an item in the 
stream table of data plane and 
processing the current data message according to the established 
stream table item or the control strategy of the control 
management plane; when the item including the current 
data stream identification exists in the stream table of data plane, judging whether stream table item edition information matches the edition information of the control strategy of the current control 
management plane, if matching, 
processing the current data message according to the stream table item, otherwise, 
processing the current data message according to the control strategy of the current control management plane. The invention can insure the consistency of the 
data processing mode of data plane and the control strategy of the control management plane, consequently, avoid 
data processing errors.