The invention discloses a manganese residue percolation wastewater treatment system, and relates to the field of wastewater treatment, the manganese residue percolation wastewater treatment system comprises a precipitation module, a reaction module and a purification module, the precipitation module comprises a precipitation tank, a coagulant aid dosing device, a kneading machine and two flocculant dosing devices, the reaction module comprises a sodium carbonate dosing device, a lime powder dosing device, a chlorine dioxide generator and a reaction tank, and the purification module comprises a purification tank, an ammonia nitrogen membrane separator, an electric adsorption device, an adjusting tank, an alkali liquor dosing device and a dilute acid dosing device. By adding the flocculating agent and the coagulant aid, large-particle pollutants easy to precipitate in the wastewater can be separated and precipitated, subsequent recycling or innocent treatment of the precipitates is facilitated, and meanwhile, the inorganic flocculating agent can separate out and precipitate color development substances in the wastewater, so that the cost of subsequent decolorization treatment is reduced; the waste water treatment efficiency is high, the cost is low, the discharge standard is met, and meanwhile impurities in the waste water can be conveniently recycled and reused.