Abstract: Focusing on the status of difficult determination of volcanic framework parameters of the Paleogene Shahejie formation in Nanpu 5th structure of Huanghua depression, on the premise of accurate division of the volcanic rock types, this paper offers the volcanic framework parameters of each lithology by means of core analysis data, conventional well logging curves and elemental capture spectroscopy (ECS) logs, as well as cross?plot and multiple regression analysis, and then calculates the reservoir’s porosity, based on the accuracy of the porosity, verifies and finally determines the volcanic framework parameters of Nanpu 5th structure, laying foundation for the volcanic reservoir evaluation in this area