The invention provides a comprehensive recovery method for electroplating sludge. The method comprises the following steps: (1) mixing the electroplating sludge with sodium carbonate, and then roasting a mixture; (2) performing water leaching and filtration on roasted residue obtained in the step (1) so as to obtain leaching liquid and a filter cake; (3) adding sodium hydroxide in a CO2 neutralizing solution into the leaching liquid, adding seed crystal to remove aluminum and silicon in the solution, adding a reducing agent into a decontaminated sodium chromate solution for reduction, and filtering and washing obtained slurry to obtain a chromium hydroxide filter cake; (4) mixing filter residue obtained in the step (2) with inorganic acid, and then leaching a mixture to obtain leaching liquid and filter residue; (5) regulating the pH value of the leaching liquid obtained in the step (4) to be 1.0-4.0, and then performing filtration to obtain ferric hydroxide and a mother precipitation solution; (6) extracting a water phase through the mother precipitation solution obtained in the step (5) to obtain a nickel-containing solution, and reversely extracting an oil phase to obtain a copper-containing solution. The method is environment-friendly and pollution-free, has obvious economic benefits, and is an effective way to treat the electroplating sludge.