The invention relates to a multiparameter media adapter gateway and an adaption method thereof. The multiparameter media adapter gateway comprises an adaption control unit and a two-layer of stream transmission unit structure, wherein the adaption control unit comprises a session information base module, a parameter statistics module, an analysis and decision module, a stream adaption control module and an adaption utility feedback module; and the stream transmission unit comprises a decoding module, a coding module and a stream distribution module. By the invention, the setting times and quality of session for the multimedia service under a heterogeneous network environment can be improved, and meanwhile, calculating expense and resource consumption of a streaming media server can be reduced; and the media is adaptive to be as an independent unit, so that the deploying flexibility of a whole streaming media system is improved, meanwhile, the design of the multimedia adaption scheme has good expansion, different adaption parameter sets can be quickly added to a decision tree model, and the weighting of the adaptive parameters can be subject to statistic updating according to self-adaption feedback. Further, the invention better meets the requirements of the actual media adaption application scene.