Abstract: Baka gas field is located in Taibei sag of Tuha Basin , of which the tight sandstone reservoir of lower Jurassic Badaowan formation is the important gas production horizon.In this paper we chose seismic multi-attribute inversion method to establish the function relationship between the reservoir parameters of drilled wells and the optimized seismic attributes , by which a data volume of reservoir parameters can be obtained.This method has a high precision and can be used to describe the distribution characteristics of reservoir space in detail.The method was applied to reservoir prediction research of Badaowan formation in Baka gas filed , through the inversion we obtained the information of natural gamma and porosity of target layer , predicted the gas-bearing sand body distribution regularity and its distribution area of reservoirs ; statistical analysis showed that there is a high coincidence degree between the prediction and the drill.