The invention discloses a high-performance main iron runner capable of being rapidly repaired and a preparation method and construction method thereof. The main iron runner sequentially comprises a housing and a castable layer from outside to inside, wherein the main iron runner further comprises a flushing and wearing resisting lining plate, the flushing and wearing resisting lining plate is embedded in the part, where an iron dropping point is impacted by molten iron, of the castable layer, and a lining structure of the main iron runner is cooperatively formed by the flushing and wearing resisting lining plate and the castable layer. The main iron runner has the advantages that a main runner can be rapidly and conveniently repaired, especially a new flushing and wearing resisting liningplate is simply replaced when the iron dropping point of the main iron runner is damaged, so that the repairing time of the main iron runner is shortened, the main iron rubber has the advantages of long service life, high iron influx and high economic benefits. The invention further discloses the preparation method and construction method of the main iron runner.