Abstract: There  are  two events which occurred  in relation  to  the recovery  of  Taiwan.First,Zheng  Chenggong’s troops  drove  the Dutch   colonists  out  of  Taiwan,and  Taiwan   again became  a territory  of  China.Second ，Qing’s  Army  conquered  Taiwan  after the negotiation  between  the  Qing  government   and  Taiwan’s  ruling  circles  failed，and this helped accomplish  the  unification。Zheng Chenggong   and  Emperor Kangxi,who were  the  two opposing  rulers,made their own  important  contribution  to  the recovering  of Taiwan.This  writer  examined  the whole story  in  detail  and discussed  its  significances   during the different  periods.