Abstract: Reservoir fluid type is the key to the exploration and development decision making.With the deepening of the BZ structure exploration evaluation, the identification of fluid types of complex glutenite reservoir is becoming more and more challenging.On the basis of previous studies, taking the complex glutenite reservoir in Kongdian Formation of the BZ structure as the research objective, based on the analytical results of fluid components in typical wells in the study area, the phase analysis method and the hydrocarbon-composition-parameters based empirical determination method are used to identify the fluid types of complex glutenite reservoir in the Kongdian Formation of the BZ structure.The results of two methods are highly consistent.The combined method has a good application performance.The complex glutenite reservoir in the Kongdian Formation of the BZ structure is dominated by oil-free condensate gas reservoir.