Abstract: After analyzing difference and relationship between reserves evaluation technology about traditional CBM and mining influence zone methane, the paper finds that the study emphasises of methane reserves evaluation technology in mining influence zone are mining pressure relief range, gas sources and methane reservoir characteristics. Extended from definition of reservoir of coalbed methane, the paper researches the reservoir reservoir description content about coalbed methane in mining influence zone, and presents the most key contents such as geometry and boundary conditions, physical and chemical component, the reservoir structure and fracture field, storage capacity of reservoir, fluid properties in reservoir and porous medium characteristics about reservoir, and discusses the respective main content in detail.