Abstract: According to the observed and measured data of fluid inclusions in the Qiangtang Basin in this paper,the main types and characteristics of fluid inclusions were studied comprehensively.Based on the study of diagenesis,the authors emphatically discussed the application of the fluid inclusion technology to the study of reservoir diagenesis.The succession of the TriassicJurassic diagenetic evolution in the Qiangtang Basin was established,and the relationship of diagenesis to hydrocarbon migration was analysed.This made a preliminary approach to the application of the fluid inclusion technology to reservoir research.