The invention relates to a double-medium micro-channel heat exchanger. The double-medium micro-channel heat exchanger comprises medium A collecting pipes and medium B collecting pipes; a medium A inlet and a medium A outlet are respectively formed in the surfaces of the two medium A collecting pipes; a medium B inlet and a medium B outlet are respectively formed in the surfaces of the medium B collecting pipes; a plurality of medium B flat pipes are mounted on opposite surfaces of the medium B collecting pipes; a plurality of medium A flat pipes are mounted on opposite surfaces of the medium A collecting pipes; the medium B flat pipes on the two medium B collecting pipes are staggered to one another in a mirroring manner; and each medium A flat pipe is clamped between the two corresponding medium B flat pipes. Compared with the prior art, the double-medium micro-channel heat exchanger has the following advantages after the structure is adopted: the double-medium micro-channel heat exchanger is an efficient heat exchanger made of an all-aluminum material, heat is transferred through the flat pipes with micro-channels and fins with window-shades, the flat pipes of two media are tightly attached together by brazing, and therefore, the heat exchange efficiency is improved remarkably.