Abstract: On the basis of the magnetic time scale and magnetostratigraphic results,the relationship between changes of the magnetic reversal frequency and core/mantle coupling,especially the episodic evolutions of the D" layer since the Carboniferous, was analysed. The episodic geomagnetic reversal friquencies and the true polar wander could correlate with lower/upper mantle convection and lithospheric dynamics. Tentative correlation between the breakup of the Pangea and the Mesozoic lithospheric geodynamic evolution of eastern Asia was discussed.