In making a survey of Bayinuoergong rock mass in the north of Alxa Zuoqi region, Nei Monggol (Inner Mongolia), the authors have discovered a kind of polyclic spheroids with diameter of 10-14cm. They occur in the Hercynian granites in the form of accumulation and may have been the paticular granitic inclusions resulted from the transformation of sedimentary nudules during the long geology history. The authors suggest the following sequence in development of transformations development of sedimentary nudules-metamorphism-->remel- ting and granitization. This sequence eras supported both by the composition (mineral and chemistry) and the texture (or structure) of the spheroids and their round rocks.