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The invention provides a method for recovering ferric chloride etching waste etching solution, which adopts membrane electrolysis and extraction integration technology, and an ion exchange membrane is set in the electrolytic cell to divide the electrolytic cell to form an anode chamber and a cathode chamber, and the cathode and the anode are respectively The cathode chamber and anode chamber located on both sides of the ion exchange membrane; ferric chloride etching waste solution is added into the cathode chamber for membrane electrolysis, and the Fe 3+ ion reduction to Fe 2+ Ions; the solution after electrolysis in the cathode chamber is extracted to remove impurity metals to obtain the extract phase solution and the demetallized impurity phase solution, and the demetallized impurity phase solution is sent to the anode chamber for membrane electrolysis, and the Fe 2+ Ions are oxidized to Fe 3+ Ions; the solution obtained by electrolysis in the anode chamber is recovered. Compared with the current ferric chloride etching waste liquid treatment technology, the technological process is short and simple, no secondary pollution occurs, no three wastes are discharged, the production cost is low, and it is suitable for large-scale treatment. The annual treatment capacity can be more than 10,000 tons. It has good environmental and economic benefits.