The invention relates to a water-saving, ecologic and landscape type irrigation canal for a southern plain irrigation area. Ecological zones are set on the irrigation canal at an equal spacing in the longitudinal direction; meanwhile, the cross section of the irrigation canal is divided into a plurality of zone bits according to water levels; each zone bit is provided with a corresponding side slope for protection according to the corresponding water level. The canal can meet the demands of water flow under different water level conditions on stability and the anti-seepage performance of a side slope on the aspect of a transverse protection slope, and provide a sufficient space for the growth of plants at the conventional water level in the form of epitegum protection slopes; furthermore, the irrigation canal has a biological channel function in the aspect of a longitudinal protection slope; therefore, the whole ecological effect on canal construction is enhanced, and comprehensive benefits of water saving, ecology and landscape are achieved.