The invention discloses a co-plane focusing nano-cold cathode electron source array having the row and column addressing function. According to the structure of the electron source array, the segmented electrode bridge connection in series is realized through etching through holes and annular top annular gate electrodes, so that the row and column addressing function of a nano-cold cathode electron source is realized under the condition that a focusing electrode and a grid electrode are in the same plane. The invention further discloses a manufacturing method of the nano-cold cathode electronsource array. The preparation process of the nano-cold cathode electron source array is simple, and the focusing electron beam capability and the addressable emission capacity are improved. The co-plane focusing nano-cold cathode electron source array has an important application prospect in the fields of flat plate x-ray sources, field emission displays and the like as large-area electron sources.