The Micelson type all-fiber laser array composed by two fiber lasers was designed.By experiment，the character of coupling interference of output beam was analyzed.The relation between the ratio of the two pumping power and the coupling efficiency，the pumping efficiency，the output power，and the stability of this system was analyzed.Experimental analysis results showed that the output power of fiber laser array was equal to the interference power of the two beams from the two embranchment lasers，and the coupling efficiency was correspondingly steady; and the pumping efficiency and the output power reduced as the ratio of pumping power increased without reaching plus saturation.