This paper clarifies three aspects, through the sorting out of the documents, the decision issue of the benefit maximization of the enterprises and creditors when benefit conflict does not exist, the relation between debt financing decision and capital structure under the condition of benefit maximization and the influence of debt financing decision on capital structure under the condition of benefit conflict. By retrospection and 〖JP2〗review of the literatures, finally, this paper prospects future research in order to provide new angle and ideas for solving the problem in company financing through the discussion and research on the related contents.