The revenue is one of the accounting core elements, but its existed definition has not been accepted by the public. Based on the basis of the producing mechanism of rights and responsibility, through the analysis of producing basis, realizing process of revenue, and economic interest flow direction, the author finds the essence of revenue and puts forward the new definition of revenue in accounting. The revenue means the interests of enterprises which is obtained or will be obtained by the enterprises in order to attain their goals after fulfilling their obligation.