A traditional combination which comprises each radial and tangential dissection sealing ring needs a certain elastic deformation of elastic sealing rings in continuous abrasion in order to realize enough sealing effects. However, abrasion degree reached thereout is limited. On the other hand, abrasion of a sealing ring cannot be controlled, and high abrasion degree and long service life are provided through an opening; therefore, regular maintenance and replacement of the sealing ring are required considering dangers of damaging or destroying the sealing rings. Through a sealing ring combination comprising a multi-body sealing ring (12) and a check ring (20) of the invention, the problems can be avoided; wherein, an axial convex shoulder (16) is arranged on each seal section (14) of the sealing ring (12), at least a part of which along the axial direction covers the a check ring (20) and the convex shoulder (16) is arranged with an interval with the check ring (20) along the axial direction, thus the convex shoulder (16) is supported on the check ring (20) from a certain abrasion of each seal section (14) in order to realize tan abrasion stop/limit or an abrasion deferring.