The invention discloses a method for treating electrolytic waste residues and wastewater produced in an electrolytic process nitrogen trifluoride production technology. The method comprises the following steps: (1) neutralizing the electrolytic waste residues and wastewater: adding the electrolytic waste residues and fluorine-containing wastewater generated by cleaning an electrolytic bath into aneutralizing kettle, performing stirring until full dissolving, introducing ammonia water, controlling the reaction temperature to 20-50 DEG C until the pH value of the solution in the reaction kettlereaches 2-5, and stopping the introduction of the ammonia water in order to obtain an aqueous ammonium bifluoride solution; (2) centrifugally separating a nickel-containing byproduct: adding a flocculating agent into the ammonium bifluoride solution to separate out and flocculate the nickel-containing byproduct and form a precipitate, and centrifugally separating the nickel-containing byproduct;(3) performing vacuum concentration: adding the ammonium bifluoride solution into a dehydration kettle, and carrying out evaporative concentrating dehydration under the conditions of -0.086 to -0.096Mpa and 65-75 DEG C until the mass concentration of ammonium bifluoride reaches 60-80%; and (4) performing cooling crystallization, centrifugal separation and drying. The method reduces environmentalpollution, realizes resource recycling and reduces the production cost.