The transmission, conversion and control capability of the two-port network have been widely used in complex communication system, precise computer network, large-scale power equipment, and advanced intelligent manufacturing. In this paper, four equivalent circuits of source-containing two-port network are raised. The calculating result of corresponding parameters shows that the research method is applicable to both reciprocal and non-reciprocal two-port network. Then transmission matrix of source-containing two-port network is derivated. The similarities and differences between transmission parameters of source-containing two-port network and passive two-port network are compared and analyzed. Finally, by comparing the results of theoretical calculation and simulation experiment, the method, used to get the equivalent circuits of source-containing two-port network and the calculation of transmission parameters, is validated.