The invention discloses a method for repairing farmland soil polluted by cadmium, belongs to the technical field of repairing and treatment of the farmland soil polluted by the cadmium, and solves the problems that the existing technology for repairing the farmland soil polluted by the cadmium is poor in effect, high in cost and not thorough in repairing, the soil cannot be used for farming after being repaired, and the farmland ecologic environment is affected severely. The method includes the steps of firstly, selecting farmland polluted by the cadmium, ploughing the soil of the farmland, crushing the soil, ridging, and arranging draining ditches; secondly, planting Salix Jiangsuensis CL. 172 cuttage in the farmland soil processed by the first step; thirdly, performing agricultural management and protection which includes watering, pest control and weeding on the Salix Jiangsuensis CL. 172 cuttage to allow the same to survive and grow normally. The method has the advantages that the repairing effect of the farmland soil polluted by the cadmium can be increased effectively, the method is low in repairing cost, stable, continuous and durable in repairing cycle and small in labor intensity of workers, the method belongs to the natural repairing technology, and a good ecological environment of the farmland is achieved at the same time.