The temporal differences between the emplacement of Mesozoic granitoids of crust remelting types andrelated mineralizations are quite common in the Nanling Range area，South China． Three major cases arerecognized． (1)The host granitic rocks of those granite—type uranium deposits are mostly of the IndosinianPeriod (235～ 205 M a)，whereas the uranium m ineralization took place in the late Yanshanian Period (youngerthan 140 M a)． (2)The first stage of the Yanshanian Period (170～ 150 M a)was the tim e when most crustremelting granitic plutons developed． However，the associated mineralizations of W ，Sn and other rare m etalsm ostly occur in the second stage of the Yanshanian Period (1 5 0～ 1 3 9 M a)． (3)M any shallow — em placedgranitic rocks developed in the late Yanshanian Period (139～ < 98 M a)．which are closely related with Sn andU mineralizations．There are also differences between rock—forming and ore—forming times．It is suggested thatthis temporal difference might reflect their differences in material sources as well as geotectonic settings，andfurther more，the primary difference of the mechanism s between granite formation and ore formation． It isconcluded that the large—scale metallogeny in the Nanling Range area was essentially related with extensiongeotectonic setting，crust- m antle interaction，high heat flow ，and the participation of deep—sourced fluids．