The invention discloses a preparation method for a composite flexible transparent conductive film, and relates to the field of conductive film preparation. The method comprises the following steps: S110, preparing a hydrophilic polymer nano network, and drying the hydrophilic polymer nano network under the normal temperature for standby application; S120, dissolving a hydrophobic polymer or a monomer thereof into a corresponding solvent, placing the hydrophilic polymer nano network obtained at step S110 in hydrophobic polymer solution, and preparing a hydrophilic and hydrophobic polymer film;S130, drying the hydrophilic and hydrophobic polymer film prepared at step S120, peeling the hydrophilic and hydrophobic polymer film off from a glass substrate, enabling the hydrophilic and hydrophobic polymer film to be immersed into silver ammonia solution or copper ammonia solution, and preparing a hydrophilic and hydrophobic polymer composite metal film; S140, immersing the hydrophilic and hydrophobic polymer composite metal film prepared at step S130 into a reducing solvent, taking out the hydrophilic and hydrophobic polymer composite metal film for baking, carrying out the rinsing and drying of the hydrophilic and hydrophobic polymer composite metal film, and preparing a composite flexible transparent conductive film. The invention provides a transparent conductive film preparationtechnology which is high in stability and is easy to operate. The technology is simple in flow, is easy to operate, and is suitable for batch preparation.