Regeneration recycling method of acidic etching solution

The invention discloses a regeneration recycling method of an acidic etching solution. The regeneration recycling method of the acidic etching solution is characterized by comprising the following steps of S1, recycling a high-copper-content acidic etching mother solution discharged after PCB etching; S2, extracting excessive copper in the acidic etching mother solution through electrolysis; S3, adding an acidic etching regenerant into the acidic etching mother solution subjected to electrolytic extraction, and uniformly mixing the acidic etching regenerant and the acidic etching mother solution; and S4, enabling the regenerated acidic etching solution obtained in the step S3 to return to an etching production line for reuse. The regeneration recycling method of the acidic etching solution is simple in process, convenient to operate and control, low in equipment investment and capable of safely and efficiently achieving recycling of the waste solution, changes waste into valuables and achieves synchronous imp