According to concept of unite and super-unite, the Darongshan-Shiwanda-shan granitic batholith in Guangxi is divided into Shinan, Kuishan, Liuwanshan and Wangchong super-unites, where the first three super-unites could be incorporated in the Darongshan-Shiwandashan rockgroup. Eech super-unite consists of several unites. The ages for these unites have been systematically determined by means of 40Ar/39Ar step-heating dating and K-Ar dating.Based on these data, a isotopic geological age table of the area is established. The age table shows that emplacement age of the Darongshan-Shiwanda-shan rockgroup ranges from 258. Ma of upper Permian to 231 Ma of middle Trias and its duration is about 27 Ma. There is the feature of parallel evolution between super-unites in the Darongshan-Shiwandashan rockgroup.Wangchong super-unite formed in 259 Ma of lower Permian.