The invention provides a preparation method for a haze-adjustable flexible transparent conductive film. The transparent electrode is a nanometer silver line ink which is composed of a light scattering medium, a nanometer silver line and a high molecular bonder and an organic solvent and is coated on a flexible substrate material; after the ink is baked, a transparent nanometer silver line conductive network is formed on the flexible substrate, and the nanometer silver line conductive network is embedded with the light scattering medium at the same time, so that the flexible transparent conductive film is formed; the haze adjustment of the transparent electrode can be realized finally according to the difference of the parameters such as the type as well as the concentration, the size and the like of the light scattering medium; and the transparent electrode is obtained by coating of the nanometer silver line ink, so that the adjusting of the haze can be realized while good conductivity and high light transmittance are remained. The prepared product not only can be applied to the field of a touch screen and a display panel and the like which require lower haze, but also can satisfy requirement for higher haze of the transparent electrode in the field of a film solar cell panel. Meanwhile, a one-step film forming process is simple and is suitable for roll-to-roll printing.