The invention relates to a combined and detachable embedded type ladle edge of a steel ladle. The combined and detachable embedded type ladle edge comprises six connecting plates, rib plates and fireproof materials, wherein the rib plates are perpendicularly arranged on the inner sides of the connecting plates; the six connecting plates are uniformly mounted on the inner side of a ladle mouth of the steel ladle; the connecting plates are connected with an inner wall of the ladle mouth of the steel ladle by bolts in a fastening manner so that the rib plates are perpendicular to an upper edge ofthe ladle mouth of the steel ladle; the fireproof materials are poured between the two adjacent rib plates so as to form the ladle edge; and a corresponding fireproof material brick is built on the inner side of the ladle mouth of the steel ladle and positioned under the ladle edge. According to long-term validation, the ladle edge disclosed by the invention has the advantages that the service life is greatly prolonged, and the service life is 2 to 3 times that of a welding type ladle edge; the ladle edge is connected with the inner wall of the ladle mouth of the steel ladle through the boltsin the fastening manner, and replacement is simple, so that the time and the labor are saved; and the ladle edge of easily-damaged parts can be replaced separately, and the replacement time every time is about 1/3 of that of the welding type ladle edge.