The invention discloses a nature-imitated fishway adapted to fishes with different swimming abilities, and relates to the ecological field of fish passing structures and water conservancy and hydroelectric engineering. The nature-imitated fishway comprises fishway outer wing walls, a fishway bottom plate and a plurality of fishway units. Fish upstream outer passages with the small flowing speed are formed between the fishway outer wing walls and fishway inner wing walls, and fish upstream inner passages with the large flowing speed are formed between the fishway inner wing walls of the same fishway unit; the outer passages and the inner passages are combined to form multiple hydrodynamic conditions to meet the upstream demands of the fishes with the different swimming abilities; and the fishway units are internally provided with deflection plates which automatically adjust the magnitude of the opening degree according to the flow magnitude and water depth change, so that the proper flow speed for passing of the fishes is easily formed at fish passing vertical seams. Compared with a tradition fishaway, according to the nature-imitated fishway adapted to the fishes with the differentswimming abilities, the diversified water flow conditions can be formed, environmental suitability of fish upstream is enhanced, and the migratory efficiency of the fishes with the different swimmingabilities is improved.