The invention discloses a service control signaling overhead determining method and apparatus. According to the service control signaling overhead determining method and apparatus of the invention, paging messages, RACH overhead and AGCH overhead and control signaling total overhead of set types of services of an MS can be determined according to at least one of paging message and data packets of the MS, a duration configured by a core network side mobility state sequence timer of the MS, and a duration configured by a wireless side TBF release timber; the control signaling overhead of the set types of services of the MS can be determined accurately according to a plurality of kinds of control messages; and therefore, problems of few kinds of collected signaling and inaccurate determination results existing in service signaling overhead statistics in the prior art can be solved.