Abstract: By the study of storage and migration character about AMM, and based on the theory of coal geology, oil geology and the effect of mining, referred the methodology of oil and coalbed methane reservoir characterization, this paper researches and shows the reservoir character and its distribution regularities, and migration mechanism about AMM. Extended from the technology of coalbed methane reservoir characterization, this paper researches the technology of AMM reserv oir characterization, and presents the content of AMM reservoir characterization.