The invention provides a display panel with a 
fingerprint identification function, a preparation method and a 
display device for achieving an 
OLED display with the 
fingerprint identification function, reducing the 
process complexity and saving the cost. The display panel with the 
fingerprint identification function provided by the invention comprises an array substrate, an 
anode layer, a pixel definition region, a plurality of organic light-emitting units, an isolating column, a reuse 
electrode layer, a second 
electrode layer and a cover plate, wherein the 
anode layer is located on the array substrate; the plurality of organic light-emitting units are surrounded by the pixel definition region; the pixel definition region and the organic light-emitting units are located on the 
anode layer; the isolating column is located on the pixel definition region; the reuse 
electrode layer is located on the isolating column and the organic light-emitting units; the reuse electrode layer comprises a 
cathode layer and a first electrode layer; the reuse electrode layer covering the isolating column is taken as a first electrode layer; the reuse electrode layer surrounded by the first electrode layer is taken as the 
cathode layer; the first electrode layer and the 
cathode layer are arranged on the same layer and are not connected with each other; the second electrode layer is located on the reuse electrode layer; and the cover plate is located on the second electrode layer.