The invention discloses a method for recovery and reusing of etching liquid containing copper ions and nitrate, and belongs to the technical field of etching liquid recovery. The method comprises thefollowing steps that a high-concentration copper-containing solution and a low-concentration copper-containing solution are obtained from the etching liquid through an electrodialysis device, the high-concentration copper-containing solution enters a copper extraction tank to be subjected to circulating electrolysis, thus the copper ions are reduced to generate copper elementary substances, the copper elementary substances are deposited on a copper electrode serving as a cathode, the cathode serves as an anode in a refining tank, thus the anode in the refining tank is dissolved out on the cathode, and a copper plate is obtained; electrolyte, with the low copper ion concentration, obtained in the copper extraction tank and the low-concentration copper-containing solution generated in the electrodialysis device are subjected to swirling flow electrolysis, and thus a copper pipe and/or copper powder are/is obtained; and concentrated nitric acid is added into clear liquid, and thus the etching liquid is recycled. If the etching liquid contains nickel ions, after electrolysis is completed, lye is added to adjust pH, and thus the nickel ions are precipitated. Copper recycled through themethod is high in economic value, a chemical agent is not put, and secondary pollution is avoided; and the etching liquid is regenerated and recycled, and resources are maximally utilized.