Abstract:Kimberlite is complex rock with changeful chemical composition, mineral composition and structures. Alteration also easily happened. Therefore, the age of kimberlite is difficult to be determined by using a single age determination method, and the results are very different. In this paper, setting the age determination methods of kimberlite applied in Mengyin area of Shandong province as an example, through comparison and analysis of the KAr method, ArAr method, RbSr method, SmNd method, UPb method, different age determination method and applicability of rock and mineral samples have been studied. It is regarded that in line with the formation of kimberlite emplacement under the premise of time constraints, it is very essential to confirm with each other, to sutdy minerals, rocks and magmatic in deep part by using a variety of dating methods.