In this paper

we proposed the interpretation thought and method for the tight sandstone gas reservoirs. Firstly

we took the comprehensive evaluation method

combining the traditional quantitative interpretation with the special evaluation and the analysis of geological background to establish the parameters of rock electricity evaluation by dividing structure and deposition. Then

we used the variation of porosity to establish the variation of rock electrical parameters. Based on the analysis of reservoir lithology

physical property background and sensitive curve characteristics

we used the gas bearing attributes of three kinds of porosity curves to identify the gas reservoir attributes. By comparing with the test data and a large number of test results

the accuracy of gas reservoir identification was improved obviously.