Combining with the related specifications of IASB and FASB on asset retirement obligation ,we conduct research on these issues: the formulation of the asset retirement obligations accounting standards , environmental liabilities recognition, measurement and the capitalization of disposal cost in United States ,then we examine the differences of asset retirement obligations accounting standards between FASB and IASB ,in order to provide some reference on the development of International financial accounting conceptual framework, and we put forward some problems need to be solved urgently in the process of asset retirement obligations.