The utility model discloses a foot drop-preventing exercise device, and pertains to the medical apparatus and instrument technical field. At present, no very good exercise device is available for a patient with foot drop to carry out the rehabilitating exercise, and the general method to prevent foot drop is that the patient lift his legs high frequently, or the accompanying staff lift the legs of the patient, creating the problem that the patient does not stick to the process easily, and the accompanying staff can not help the patient to conduct the exercise in the long term. The technical proposal of the utility model is that a pulley (1) is arranged on a bracket (5), a bracket leg (6) is fixed on the bracket (5), a hauling rope (4) is wound on the pulley (1), one end of the hauling rope is provided with a rope loop (2), and the other end of the hauling rope is equipped with a foot fixing loop (3). The utility model has the advantages that the foot drop-preventing exercise device has a reasonable and practical structural design and an artful and novel concept, helps the patient to persevere with the long-term funny exercise to prevent the foot drop, enables the patient to exercise himself without the companion of the accompanying staff, allows simple and convenient operation and use, permits the patient to exercise when he lies, prevents the foot drop and trains the pathologic extremity.