NOVELTY - Photoelectric conversion function wallpaper comprises a wall paper and a dye-sensitized solar battery as substrate of wallpaper. The wallpaper is pure paper wallpaper, nonwoven fabric wallpaper, plastic wallpaper or high filling environmentally friendly wallpaper.    USE - Used as photoelectric conversion function wallpaper.    ADVANTAGE - The wallpaper achieves utilization of solar energy generated within the building, is good for saving building energy and reduces emissions.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing photoelectric conversion function wallpaper, comprising (i) preparing a layer of 10-45 mu m of nano oxide porous film on a flexible transparent conductive polymer substrate using magnetron sputtering, spray coating, electroless plating, screen printing, dip coating, ultrasonic plating, or spin coating; (ii) preparing a layer of photosensitive dye on the nano oxide porous film using screen printing, dip coating, spray coating, printing, or ultrasonic plating, sensitizing and protecting from light for 10-22 hours, taking out, soaking in ethanol for few minutes, washing the surface, physical absorbing the photosensitive dye, and naturally drying in the dark to obtain photoanode of dye-sensitized solar battery; (iii) preparing specific pattern of flexible transparent conductive layer on wallpaper by screen printing, printing, or spray coating, or adhering a layer of flexible transparent conductive polymer on the wallpaper; and preparing 1-4.3 mu m of catalyst layer on the flexible transparent conductive polymer by screen printing, printing, or spraying to obtain a pair of electrodes of dye-sensitized solar battery; (iv) preparing a layer of sealing material around the electrode surface by screen printing, printing, or spraying, where the width of the sealing material is 0.2-0.9 mm and the thickness is 15-60 mu m; (v) preparing counter electrode of dye-sensitized solar battery by dropping liquid electrolyte, screen printing of quasi-solid electrolyte, printing, or spray coating; and (vi) hot-pressing and encapsulating the photoanode of dye-sensitized solar battery, dropping electrolyte prepared in the step (iii) to (iv) and the sealing material.